TEKS.MATH.8.5D

Which equation best matches the trend line from the scatter plot ?

• A
• B
• C
• D

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TEKS.MATH.8.5D

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 25.05x + 5.57
• f(x) = 5.57x + 25.05
• f(x) = -5.57x + 25.05
• f(x) = 5.57x - 25.05

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TEKS.MATH.8.5D

Estimate the value of r:

• 0.03
• -1
• 0.79
• - 0.72

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TEKS.MATH.8.5D

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 85

• 92

• 70

• 76

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TEKS.MATH.8.5D

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

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TEKS.MATH.8.5D

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

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TEKS.MATH.8.5D

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• A. 50 min
• B. 80 min
• C. 45 min
• D. 60 min

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TEKS.MATH.8.5D

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries.

Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

• $240

• $190

• $210

• $285

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TEKS.MATH.8.5D

Find the equation of the line of best fit for the given data

• y = 163.41x+1.49

• y =- 163.41x+ 4.19

• y =- 4.19x+163.41

• y = 4.19x -163.41

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TEKS.MATH.8.5D

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

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TEKS.MATH.8.5D