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problem solving with trend lines homework 4 answer key

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Scatter Plots and Trend Line Worksheets

Graphs are visual representations of information and data. You may often see graphs in business presentations and infographics. They summarize information by arranging data visually and creating a visual representation from charts. Demographics, price points, and other information are used to create these visualizations. Plots are not just used in math; they are also used in several other math-related subjects. Algebra, geometry, topology, and trigonometry all use plots in operations. A plot is a graph that a new or old point generates relative to an existing line. Data entry is typically represented as a point with a position, a scale, and many X-Y coordinates. This means whenever we have a scatter plot, we have a structure where we can see the data represented graphically. Scatter plots are a way of representing data by graphing two sets of data on the same picture. The two data sets are graphed against each other, and the resulting data points are sometimes grouped or shown as a trend line that connects all the data points. If we are able to make sense of the prevailing direction of the data, we can create a trend line which can help us explain a relationship that exists within the data. This is a series of worksheets that helps students learn to identify and interpret scatter plots of linear functions to see what relationships may exist and what we can learn from them.

Aligned Standard: HSS-ID.B.6c

  • Trend Line Equations Step-by-step Lesson - Where the previous standard had us understand the trend line, now we find the equation for it.
  • Guided Lesson - I'm trying to be positive here! See if you get what I mean. That should be an extra credit question.
  • Guided Lesson Explanation - This is a bit lengthy four page explanation of the problems for you.
  • Practice Worksheet - Yes, these trends are a bit on the side of all over the place.
  • Matching Worksheet - Match the graphs and their trend line equations.
  • Answer Keys - These are for all the unlocked materials above.

Homework Sheets

Time to mathematically breakdown the trends on lines.

  • Homework 1 - A trend line roughly describes the relationship between two variables in a set of data.
  • Homework 2 - Plug (1, 2) and (0, -6) into the slope formula.
  • Homework 3 - Plug the slope m = 3 and the y-intercept b = -4 into the slope-intercept formula. y = 3x - 4.

Practice Worksheets

With the basic trend plotted for you, it is pretty is to make conclusions here.

  • Practice 1 - What is the equation of the trend line shown?
  • Practice 2 - We can use a trend line to make predictions from a scatter plot.
  • Practice 3 - It is change in y-values divided by the change in x-values.

Math Skill Quizzes

Describe the trends you see of the lines.

  • Quiz 1 - Can you smell the trend that exists here?
  • Quiz 2 - The top heavy lines may confuse some.
  • Quiz 3 - I like to ask students to evaluate the lines by answer if we are in better or worse state from where the line starts (being the far left of the graph).

What Is a Scatter Plot?

Example of Scatter Plot

A scatter plot is a chart that displays multiple sets of data (typically 2 or 3 sets) in horizontal bars. It shows how a particular variable (or variables) changes over time. The bars are arranged to show the time for collecting the data. As the data in these plots are scattered, these plots are named as scatter plots. They are sometimes referred to as scatter grams, scatter charts, or even scatter graphs. They use cartesian coordinates to represent the data, and the concept is to determine the correlation between two quantities. A linear correlation will make a straight line with the given set of data whereas, a non-linear depicts a curve or any other shape through these data sets. A weak correlation refers to the plot where data points are far apart, whereas a strong correlation means the data points are near. Positive correlations represent that both variables x and y variate directly, meaning values of both x and y are increasing. On the other hand, negative correlation refers to the quantities varying in an indirect proportion (values of x are increasing and y are decreasing).

Centered Example of Scatter Plot

Here, sampled data has been collected to check if it can represent the relationship between two quantities. The above scatter plot has depicted the height and diameter of a collection of fictional trees. In this plot, each point represents the vertical position of a tree in terms of height (measured in meters) and the horizontal position in terms of diameter (measured in centimeters). It has been observed that the above plot shows a positive correlation as both the quantities on the x and y-axis are increasing.

What are Scatter Plots Used For?

A scatter plot uses dots to represent the values of two numeric variables in a plot with a horizontal and a vertical axis. The purpose of these plots is to identify the relationship between numeric variables. Not only does a scatter plot report the value of individual points of data, but even helps in reporting the trends and patterns in a data set.

Scatter plots can be used to identify correlational relationships. It helps in predicting the effect on one variable when we make changes to the other variable. We can use the scatter plots to determine if a relationship between two numeric variables is positive, negative, strong, weak, linear, or non-linear.

We can use the scatter plots to determine how close the points in the data set lie and if they can be broken into groups. It helps in identifying any gaps, missed values, or outlier points in the data set.

A scatter plot can be used to determine the relationship or correlation between two quantities which normally come in the form of experimental data. When an independent variable has more than one value corresponding to its dependent variable, an example of that can be a relation between the weight and height of a group of people as there can be many people of the same height with different weights. This visualization helps us to understand the connection between these variables. It also helps us spot situations where variables variate simultaneously. This is not commonly, but very helpful when we need it.

When To Avoid Using Them

A scatter plot should be avoided when the data is unrelated, which means you can't compare two quantities like a person's weight and the number of electronic gadgets in the house. The two quantities are not related, so their graph is not possible. Another case in which you must avoid a scatter plot is when you have a large set of data. This can result in overplotting, and you won't be able to conclude the relationship between the two quantities.

Points to Consider When using Them

If your plot depicts a positive or negative correlation, it does not always mean that one quantity changes in proportion to the other quantity. It might sometimes be true that the independent variable will cause some effect. To understand this, let us consider an example of sales of ice cream bars during winter. There's a common thought that people do not eat ice cream during winters which is why there are not many sales during the winter season. While it may be true, there can be other factors that might have affected the business, including the opening of a new ice cream bar in the same area. Just because there's somehow a connection does not mean that it works every time.

A Scatter plot can be used when there is more than one dependent variable. Suppose there are two dependent variables, then you can assign different colors that differentiate the two and plot the two separately against the independent variable to understand their relation. This can also help avoid the problem of overplotting.

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Unit Resources

  
Essential Questions
EQ 1What does the slope of a trend line indicate about the underlying data?
5-7
Key Concepts
Scatter Plot Concepts:
Content Covered
Text Book
problems 7 - 29, with more details for the even problems 20-28. This is a pdf of the answers reviewed in class.

Summary and Reminders

Quiz Name Skill Assessed Practice File Passing Grade Notes
Graphing Solve systems of equations by graphing; check the solution See homework assignments for practice problems 3 out of 4
Substitution Solve systems of equations using the substitution method; check the solution. See homework assignments for practice problems 3 out of 4  
Linear Combinations Solve systems of equations using linear combinations; this includes adding, subtracting, multiplication, division; check the solution. See homework assignments for practice problems 3 out of 4  
Writing Systems of Equations Write a system of equations to model a problem; then solve the system and check the solution. 5 out of 6
Writing Systems of Equations Write a system of equations to model a problem; then solve the system and check the solution. Practice problem sets (PDF) 3 out of 3 Practice problem set solutions (PDF)
Sample Word Problems For each of these word problems, students should be able to:

Samantha has $3.40 in dimes and quarters. The number of dimes is 8 less than the number of quarters. How many coins of each type does she have? A piggy bank has $4.30 in dimes and quarters. If the number of dimes is 7 more than 2 times the number of quarters, how many coins of each type are in the piggy bank?
George's age is 5 times Kendell's age. The sum of their ages is 48. Find the age of each. The difference of Jimmy's age and Linda's age is 10 years. The sum of 5 times Jimmy's age and 4 times Linda's age is 104. How old is each?
There were 235 people at a movie to raise funds for the drama club. Admision was $8.00 for each adult and $4.00 for each student. The total receipts for all tickets was $1504.00. How many adults and how many students attended? The length of a rectangle is 11 m less than 5 times the width. The perimeter is 434 m. Find the length and width of the rectangle.
George scored 13 more points than twice as many as Roy did. Their combined score was 40 points. How many points did each score? The difference of Jen's age and Mark's age is 6 years. The sum of 4 times Jen's age and 3 times Mark's age is 108. How old is each?
Unit 5
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Go Math Answer Key

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots

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Lesson 1: Scatter Plots and Association

  • Scatter Plots and Association – Page No. 436
  • Scatter Plots and Association – Page No. 437

Scatter Plots and Association – Page No. 438

Lesson 2: Trend Lines and Predictions

  • Trend Lines and Predictions – Page No. 442
  • Trend Lines and Predictions – Page No. 443
  • Trend Lines and Predictions – Page No. 444
  • Model Quiz – Page No. 445

Mixed Review

  • Mixed Review – Page No. 446

Guided Practice – Scatter Plots and Association – Page No. 436

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 1: Scatter Plots and Association img 1

Explanation: As Bob gets older, his height increases along with the straight line on the graph. So, the association is positive and linear.

Scatter Plots and Data Analysis Answer Key Question 2. Describe the association between Bob’s age and his height. Explain the association. Type below: _____________

Answer: The association is positive and linear. Bob’s height increases as he gets older. We would see that Bob’s height eventually stops increasing if the data continues.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 1: Scatter Plots and Association img 3

Answer: There is an outlier at (35,18)

Explanation: There is a cluster in the “20 – 25” shots attempted range and a smaller cluster in the “5 – 14” shots attempted range. There is an outlier at (35,18)

ESSENTIAL QUESTION CHECK-IN

Question 4. Explain how you can make a scatter plot from a set of bivariate data. Type below: _____________

Answer: Bivariate data – data that has two variables per observation, An x variable and y variable. Scatterplot – The graph displaying categorical data, with an x and y-axis. Response Variable – the variable that is explained by the other. Explanatory Variable – the variable which explains the other.

14.1 Independent Practice – Scatter Plots and Association – Page No. 437

Sports Use the scatter plot for 5–8.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 1: Scatter Plots and Association img 4

Question 5. Describe the association between the year and the distance jumped for the years 1960 to 1988. Type below: _____________

Answer: The data shows a positive linear association. If the year increases, the winning distance increases.

Question 6. Describe the association between the year and the distance jumped for the years after 1988. Type below: _____________

Answer: Between 1996 and 2004, there was a slight increase in distance over time. The data from 1988 to 2012 will show a negative association.

Question 7. For the entire scatter plot, is the association between the year and the distance jumped linear or nonlinear? _____________

Answer: The data show a rise between 1960 and 1988. The data also show a fall between 1988 and 2012. Therefore, overall, there is no linear pattern.

Scatter Plots and Data Unit Test Answer Key Question 8. Identify the outlier and interpret its meaning. Type below: _____________

Answer: The outlier is at (1968, 8.9). It represents a long jump of 8.9 meters in 1968 that exceeds the other jumps made in the surrounding years.

Question 9. Communicate Mathematical Ideas Compare a scatter plot that shows no association to one that shows a negative association. Type below: _____________

Answer: Randomly scattered data points with no apparent pattern define a scatter plot with no association. Data points that fall from left to right and has data set values that increase as the other decreases define a scatter plot with a negative association.

For 10–11, describe a set of real-world bivariate data that the given scatter plot could represent. Define the variable represented on each axis.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 1: Scatter Plots and Association img 5

Answer: The x-axis represents the number of containers. The y-&is represents the price per container.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 1: Scatter Plots and Association img 6

Answer: The x-axis represents the number of hours spent watching tv. The y-axis represents the number of TVs owned.

FOCUS ON HIGHER ORDER THINKING

Question 12. Multiple Representations Describe what you might see in a table of bivariate data that would lead you to conclude that the scatter plot of the data would show a cluster. Type below: _____________

Answer: A cluster in a scatter plot is when there are a lot of points all grouped around the same location. Look for points that have the same input and output values. If there are a lot of points together, you must have a cluster in your scatter plot.

Question 13. Justify Reasoning Is it possible for a scatter plot to have a positive or negative association that is not linear? Explain. Type below: _____________

Answer: Yes

Explanation: Yes; it is possible for a scatter plot to have a positive or negative association that is not linear. The data points may have a falling or rising curve that will exhibit a nonlinear association.

Question 14. Critical Thinking To try to increase profits, a theater owner increases the price of a ticket by $25 every month. Describe what a scatter plot might look like if x represents the number of months and y represents the profits. Explain your reasoning. Type below: _____________

Answer: Initially, the number of tickets sold might decline a little, but the price increase would offset the loss in sales. That means that profits would increase, showing a positive association. When the price would get too high, ticket sales would decline rapidly, so profits would fall giving a negative association.

Guided Practice – Trend Lines and Predictions – Page No. 442

Angela recorded the price of different weights of several bulk grains. She made a scatter plot of her data. Use the scatter plot for 1–4.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 2: Trend Lines and Predictions img 7

Question 2. How do you know whether your trend line is a good fit for the data? Type below: _____________

Answer: Most of the data points are close to the trend line. The trend line has about the same number of points above and below it.

Scatter Plots and Trend Lines Quiz 1 Answer Key Question 3. Write an equation for your trend line. Type below: _____________

Answer: y = 0.09x

Explanation: The trend line passes through (0, 0) and (19, 1.80). Find the slope by using the slope formula. slope = m = (y2 – y1)/(x2 – x1) = 1.80/19 = 0.09 The line passes through the origin. So, the y-intercept is 0. From an equation for the trend line substituting the slope value for m and the value of the y-intercept b in the slope-intercept formula. y = mx + b y = 0.09x + 0 y = 0.09x

Question 4. Use the equation for your trend line to interpolate the price of 7 ounces and extrapolate the price of 50 ounces. Type below: _____________

Answer: The price for 7 and 50 ounces is $0.63 and $4.50

Explanation: Use the equation for the trend line (y = 0.09x) to interpolate the price of 7 ounces by substituting 7 for x (y= 0.09 • 7) and solving for y. Use the equation for the trend line (y = 0.09x) to interpolate the price of 50 ounces by substituting 50 for x (y= 0.09 • 50) and solving for y.

Question 5. A trend line passes through two points on a scatter plot. How can you use the trend line to make a prediction between or outside the given data points? Type below: _____________

Answer: Use two points on the line. rind the slope and y-intercept. Substitute the values of the slope (m) and y-intercept (b) to form an equation using y = mx + b. Substitute the value of x for which you want to make a prediction and solve for y OR substitute your prediction for y and solve to find its value.

14.2 Independent Practice – Trend Lines and Predictions – Page No. 443

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 2: Trend Lines and Predictions img 8

Question 7. What type of association does the trend line show? Type below: _____________

Answer: Negative Association

Explanation: One data set increases – Wind Speed and the other – Wind Chill decreases. So, the trend line shows a Negative Association.

Scatter Plots and Trend Lines Answer Key Question 8. Write an equation for your trend line. Type below: _____________

Answer: y = -0.25x + 2.5

Explanation: Find the slope using the Slope Formula m = (y2 – y1)/(x2 – x1) = ((-10) – 5)/(50 – 30) = -5/20 = -0.25 Find the y-intercept using the Slope-Intercept Formula y = mx + b -5 = -0.25(30) + b -5 = -7.5 + b 2.5 = b Substitute the value of m and b into the Slope-Intercept Formula to form an equation for the trend line. y = -0.25x + 2.5

Question 9. Make a Prediction Use the trend line to predict the wind chill at these wind speeds. a. 36 mi/h _________ °F

Answer: -6.5°F

Explanation: Use the trend line to predict the wind chill at 36mi/h y = -0.25x + 2.5 y = -0.25(36) + 2.5 y = -9 + 2.5 y = -6.5 The wind chill at 36mi/h is -6.5ºF

Question 9. b. 100 mi/h _________ °F

Answer: -22.5°F

Explanation: Use the trend line to predict the wind chill at 100mi/h y = -0.25x + 2.5 y = -0.25(100) + 2.5 y = -25 + 2.5 y = -22.5 The wind chill at 100mi/h is -22.5ºF

Question 10. What is the meaning of the slope of the line? Type below: _____________

Answer: The slope means that the wind chill falls about 1°F for every 4 mph increase in wind speed.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Lesson 2: Trend Lines and Predictions img 10

Problem Solving with Trend Lines Worksheet Answers Question 12. Write an equation for your trend line. Type below: _____________

Answer: y = -(2/15)x + 64

Explanation: Find the slope using the Slope Formula m = (y2 – y1)/(x2 – x1) = (72 – 64)/(60 – 0) = 8/60 = -2/15 Find the y-intercept using the Slope-Intercept Formula at (0, 64) y = mx + b b = 64 Substitute the value of m and b into the Slope-Intercept Formula to form an equation for the trend line. y = -2/15x + 64

Question 13. Make a Prediction Use the trend line to predict the apparent temperature at 70% humidity. Type below: _____________

Answer: 73.3º F

Explanation: Use the equation of the trend line. Substitute 70(for 70%) into the equation for x. y = -(2/15)x + 64 y = -(2/15)(70) + 64 y = -140/15 + 64 y = -9.3 + 64 y = 73.3 The apparent temperature is 73.3º F

Question 14. What is the meaning of the y-intercept of the line? Type below: _____________

Answer: The y-intercept explains that at 0% humidity, the apparent temperature is 64ºF

FOCUS ON HIGHER ORDER THINKING – Trend Lines and Predictions – Page No. 444

Question 15. Communicate Mathematical Ideas Is it possible to draw a trend line on a scatter plot that shows no association? Explain. _____________

Explanation: It is not possible to draw a trend line on a scatter plot that shows no association. If the scatter plot shows no association, the data points have no relationships with one another. You can draw a trend line if a linear association is available.

Question 16. Critique Reasoning Sam drew a trend line that had about the same number of data points above it as below it, but did not pass through any data points. He then picked two data points to write the equation for the line. Is this a correct way to write the equation? Explain. _____________

Explanation: Sam did not use the correct way to write an equation. Sam may have drawn a correct trend line but using the data points that are not on the trend line may have an incorrect equation for the line. He should use two points on that trend line to write the equation.

Problem Solving with Trend Lines Homework 4 Answer Key Question 17. Marlene wanted to find a relationship between the areas and populations of counties in Texas. She plotted x (area in square miles) and y (population) for two counties on a scatter plot: Kent County (903, 808)                                Edwards County (2118, 2002) She concluded that the population of Texas counties is approximately equal to their area in square miles and drew a trend line through her points. a. Critique Reasoning Do you agree with Marlene’s method of creating a scatter plot and a trend line? Explain why or why not. _____________

Answer: I do not agree with Marlene’s method of creating a scatter plot and a trend line. She did not have enough data. Marlene should have collected and plotted data for many more counties.

Question 17. b. Counterexamples Harris County has an area of 1778 square miles and a population of about 4.3 million people. Dallas County has an area of 908 square miles and a population of about 2.5 million people. What does this data show about Marlene’s conjecture that the population of Texas counties is approximately equal to their area? Type below: _____________

Answer: The data collected are only of two counties whose populations are nearly equal to their area. The fact that the populations of Harris and Dallas counties are in the millions, Marlene’s conjecture about the population of Texas counties being equivalent to their area is invalid.

Ready to Go On? – Model Quiz – Page No. 445

14.1 Scatter Plots and Association

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Model Quiz img 12

Unit Scatter Plots and Data Homework 1 Answer Key Question 2. Describe the association you see between the number of quarts purchased and the price per quart. Explain. Type below: _____________

Answer: Negative nonlinear association

Explanation: The association seen between the number of quarts purchased and the price per quart is negative and nonlinear. As the number of quarts rises, the price per quart decreases but you can see a data curve.

14.2 Trend Lines and Predictions

The scatter plot below shows data comparing wind speed and wind chill for an air temperature of 20 °F. Use the scatter plot for Exs. 3–5.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Model Quiz img 14

Question 4. Write an equation for your trend line. Type below: _____________

Answer: y = -0.35x + 12.25

Explanation: The line passes through (10, 8.75) and (35, 0) so we can use these points to find the slope. The slope of the line is : Slope = m = (y2 – y1)/(x2 – x1) = (0 – 8.75)/(35 – 10) = -8.75/25 = -0.35 Find the y-intercept using the slope-intercept formula : y = mx + b 0 = -0.35 . 35 + b 0 = -12.25 + b b = 12.25 Substitute the slope m and the y-intercept b in the slope-intercept formula. The equation for the trend line is : y = mx + b y = -0.35x + 12.25

Problem-Solving with Trend Lines Homework 4 Answers Question 5. Use your equation to predict the wind chill to the nearest degree for a wind speed of 60 mi/h. ________ °F

Answer: 9°F

Explanation: y = −0.35x + 12.25 y = -0.35(60) + 12.25 y = -21 + 12.25 y = -8.75 The wind chill to the nearest degree for a wind speed of 60 mi/h is 9°F.

ESSENTIAL QUESTION

Question 6. How can you use scatter plots to solve real-world problems? Type below: _____________

Answer: Using a scatter plot, you can see positive and negative trends such as prices over time. You can also make predictions such as height at a certain age.

Selected Response – Mixed Review – Page No. 446

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Mixed Review img 15

Answer: b. B

Question 2. What type of association would you expect between a person’s age and hair length? Options: a. linear b. negative c. none d. positive

Answer: c. none

Explanation: The length of their hair reduces. This is because the length of hair changes with the growth phase of the hair follicles. When one is young, the cells of the papilla divide more rapidly, and hence the length of the hair is long before reaching the transitional phase and then shedding off in the telogen phase. The older one gets, the papilla cells do not divide as rapidly and the length of the hair shortens with age.

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Mixed Review img 16

Answer: d. positive association

Explanation: The scatter plot shows a cluster, some outliers, and a negative association. It does not show a positive association.

Unit Scatter Plots and Data Homework 3 Answer Key Question 4. A restaurant claims to have served 352,000,000 hamburgers. What is this number in scientific notation? Options: a. 3.52 × 10 6 b. 3.52 × 10 8 c. 35.2 × 10 7 d. 352 × 10 6

Answer: b. 3.52 × 10 8

Explanation: 100,000,000 So, 3.52 × 10 8

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Mixed Review img 17

Answer: b. y = −\(\frac{1}{4}\)x

Explanation: In order to find out the relationship between x and y, we have to use the values in the question and substitute them into the solution options. So, y = -1/4x

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots Mixed Review img 18

Question 6. b. Which data point is an outlier? Type below: ______________

Answer: The outlier is the point (92, 135).

Question 6. c. Predict the number of visitors on a day when the high temperature is 102 °F. Type below: ______________

Answer: Based on the cluster around 100°F, I would expect that on a day with a temperature of 102 °F, the pool would have between 350 and 400 visitors.

Conclusion:

Go Math Grade 8 Answer Key Chapter 14 Scatter Plots for free. Get your copy and start practicing now. Become a member of learning maths in the best and easy way with the help of the Go Math Grade 8 Chapter 14 Scatter Plots Answer Key. Enjoy learning maths with the help of the HMH Go Maths Grade 8 Solution Key.

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Scatter Plots

8th -  9th  , constant of proportionality, multiplying fractions by whole numbers, multiplication and division, scatter plots and trend lines, linear regression & scatterplots.

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  • 4. Multiple Choice Edit 1 minute 1 pt You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values? As x increases, y decreases As x increases, y increases As x decreases, y decreases
  • 8. Multiple Choice Edit 1 minute 1 pt The number of siblings you have and your weight would have which type of correlation?  Positive Negative None All of the above

If a carpenter earned $1000, what is the best estimate for how many days he worked?

Which of the following would be the most accurate equation for the scatter plot?

y = -2x - 7

y = 25x + 7

Choose the graph with a trend line that best fits the data.

What would be a good estimate for the regression (r) value?

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Scatter Plots and Trend Lines Activity | Writing Trend Line Equations Activity

problem solving with trend lines homework 4 answer key

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Description

This Scatter Plots and Trend Lines Cut and Paste is a great way for students to practice writing equations of trend lines.  Students will use the scatter plots and trend lines provided to cut and paste the correct trend line equation.

This activity is great for extra practice, as a station or center, and can be used to add variety to homework or independent work. Students can be hands-on, while still applying their understanding of scatter plots and trend lines.

Students are able to practice and apply concepts with this scatter plots and trend lines activity, while collaborating and having fun! Math can be fun and interactive!

Standards: CCSS (8.SP.3) and TEKS (8.5D)

More details on what is included:

22 ready-to-print trend line equations that can be utilized in pairs or groups of 3-4 and any necessary recording sheets and answer keys.

  • Cut and Paste: Scatter Plots and Trend Lines
  • Recording Sheet
  • Teacher Directions

***Please download a preview to see sample pages and more information.***

How to use this resource:

  • Use as a whole group classroom activity
  • Use in a small group for additional remediation, tutoring, or enrichment
  • Use as an alternative homework or independent practice assignment
  • Incorporate within our Scatter Plots and Data Unit to support the mastery of concepts and skills.

Time to Complete:

  • Most activities can be utilized within one class period. Performance tasks summarize the entire unit and may need 2-3 class periods. However, feel free to review the activities and select specific problems to meet your students’ needs and time specifications. There are multiple problems to practice the same concepts, so you can adjust as needed.

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  • Check out the corresponding Scatter Plots and Data Unit , which includes student handouts, independent practice, assessments, and answer keys.

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IMAGES

  1. Lesson 4

    problem solving with trend lines homework 4 answer key

  2. Solved SCATTER PLOTS AND TREND LINES 4, match each scatter

    problem solving with trend lines homework 4 answer key

  3. Problem solving with trend lines

    problem solving with trend lines homework 4 answer key

  4. Problem Solving with Trend lines

    problem solving with trend lines homework 4 answer key

  5. Trend Line Math Worksheet

    problem solving with trend lines homework 4 answer key

  6. Scatter Plots And Trend Lines Worksheet Answers 2020-2024

    problem solving with trend lines homework 4 answer key

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COMMENTS

  1. PDF Microsoft Word

    1. Use the trend line shown on the scatter plot to answer a-c.

  2. PDF Scatter plots and association

    Julian made a scatter plot to show the number of band members at his school over the years. The trend line of his scatter plot had an equation of y = 13x + 45 where y represents the total number of band members and x represents the number of years since 1990. Answer Key. y = 15x. Minutes worked out.

  3. Scatter Plots and Trend Line Worksheets

    Homework Sheets. Time to mathematically breakdown the trends on lines. Homework 1 - A trend line roughly describes the relationship between two variables in a set of data. Homework 2 - Plug (1, 2) and (0, -6) into the slope formula. Homework 3 - Plug the slope m = 3 and the y-intercept b = -4 into the slope-intercept formula. y = 3x - 4.

  4. Algebra: Scatter Plots

    5-7. Scatter Plots and Trend Lines. Write an equation of trend line and line of best fit from data in a scatter plot. Make a scatter plot and describe it correlation. Determine whether a linear model is appropriate. Fitting a Line to Data. Find a linear equation that approximates a set of data points. Determine whether there is a positive or ...

  5. Solved SCATTER PLOTS AND TREND LINES 4, match each scatter

    See Answer. Question: SCATTER PLOTS AND TREND LINES 4, match each scatter plot to the equation that could represent the equation of its trend line. ot all of the choices will be used.) 2. "y=3x -I b, y=4x-2 3. a 4. g. The relationship is not linear. In 5-8, write an equation of the trend line in slope-intercept form.

  6. Problem SOlving with Trend Lines

    Problem Solving with Trend Lines. Two-Way Tables. Relative Frequency. Scatter Plots and Data Study Guide. Squares and Square Roots. Real Number System. Fractions and Decimals. Estimating Square Roots. Rational Vs.

  7. PDF Scatter Plots and Trend Lines

    Scatter Plots and Trend Lines Caliah is trying to improve her reading skills by taking a speed- reading class. She is measuring how many words per minute (wpm) she can read after each week of the class.

  8. PDF Mrs. Kruger's Math Page

    4-5 Date Problem Solving Scatter Plots and Trend Lines Class Fawn is trying to improve her reading skills by taking a speed- reading class. She is measuring how many words per minute (wpm)

  9. PDF GRADE 4 • MODULE 4

    Homework a. - f. Figure drawn accurately g. Answers will vary. a. - g. Figure drawn accurately h. Answers will vary. a. Points labeled; labels will vary.

  10. PDF Answers

    Answers ADDITIONAL PRACTICE AND PROBLEM SOLVING Assign these pages to help your students practice and apply important lesson concepts. For additional exercises, see the Student Edition.

  11. Go Math Grade 8 Answer Key Chapter 14 Scatter Plots

    Problem Solving with Trend Lines Homework 4 Answer Key Question 17. Marlene wanted to find a relationship between the areas and populations of counties in Texas.

  12. PDF learning focus

    learning focus. learning focus: construct and interpret scatter plots use trend line equations to make predictions display data in two-way tables and calculate relative frequencies. ready-to-go, scaffolded student materials. SCATTER PLOTS & DATA.

  13. Solved Write an equation for the trend let line in slope

    JT PROBLEM SOLVING WITH TREND LINES Part 1: The scatter plot at the left sho cost of gas per gallon during certain Use the scaller plot to answer questi PRICE OF GAS PER GALLON (S) S S D 25 30 35 40 45 50 YEARS (SINCE 1970) 1. Use the trendline shown on the scatter plot to answer ac d. Write an equation for the trend line in slope-interceptform ...

  14. Scatter Plots and Trend Lines

    Scatter Plots and Trend Lines quiz for 7th grade students. Find other quizzes for Mathematics and more on Quizizz for free!

  15. Trend Lines and Predictions Scavenger Hunt Activity

    Description This Trend Lines and Predictions Scavenger Hunt consists of 10 clue cards where students must use the clue to solve problems using the equations of trend lines. This activity focuses on writing and interpreting equations of trend lines as well as using the equations to problem solve and make predictions.

  16. Solved Unit Scatter Plots and Data Homework 31 Namo In 1-4 ...

    Consider the given scatterplot figures. The figure 1 seems like an equation of straight line. Unit Scatter Plots and Data Homework 31 Namo In 1-4, match each scatter plot to the equation that could represent the (Not all of the choices will be used.) SCATTER PLOTS AND TREND LINES a. y = 3x b. y = 4x -2 o.y= +5 d. y = -5x o.y = -2X4 f.y=x +3 g.

  17. PDF Ch

    Scatter Plots and Trend Lines. Fawn is trying to improve her reading skills by taking a speed- reading class. She is measuring how many words per minute (wpm) she can read after each week of the class. 1. Graph a scatter plot using the given data. Weeks. 2. 3.

  18. Unit 8: Bivariate Data

    Scatter Plots and Association (Homework 1) Constructing and Predicting Scatter Plots Class Notes. Constructing Scatter Plots (Student Handout 2) Constructing Scatter Plots (Homework 2) Scatter Plots and Predictions (Student Handout 3) Scatter Plots and Predictions (Homework 3) Trend Line Equations Class Notes.

  19. Textbook Solutions with Expert Answers

    Textbook solutions are written by subject-matter experts and verified for accuracy to provide you with the best quality homework help for challenging problems. To ensure the highest level of accuracy, the verification process involves a multi-step approach that includes multiple rounds of review and feedback before any textbook solution is ...

  20. Scatter Plots and Trend Lines Activity

    Students will use the scatter plots and trend lines provided to cut and paste the correct trend line equation. This activity is great for extra practice, as a station or center, and can be used to add variety to homework or independent work. Students can be hands-on, while still applying their understanding of scatter plots and trend lines.

  21. PDF Problem Solving REAL WORLD

    Problem Solving REAL WORLD. Problem Solving REAL WORLD. Title. Go Math! Practice Book (TE), G5. Created Date. 3/29/2016 4:07:36 PM.

  22. Solved LESSON 14-2 Trend Lines and Predictions Practice and

    Our expert help has broken down your problem into an easy-to-learn solution you can count on. Question: LESSON 14-2 Trend Lines and Predictions Practice and Problem Solving: A/B Time and Distance Traveled 300 Use the scatter plot for Exercises 1-6. 1. Does the pattern of association between time (number of hours traveled) and distance (number ...

  23. Get the free 10 1 scatter plots and trend lines answer key form

    Where do I find problem solving with trend lines homework 4 answer key? The premium version of pdfFiller gives you access to a huge library of fillable forms (more than 25 million fillable templates).