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

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

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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 scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters.

• 150 pages

• 170 pages

• 190 pages

• 210 pages

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TEKS.MATH.8.5D

What is the equation of the line of best fit?

• y= 2x+3

• y=3x+2

• y= $\frac{1}{2}x\ +3$

• y= $-\frac{1}{2}x\ +3$

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TEKS.MATH.8.5D

The chart below tracts starting salaries for health care workers since the year 2000. Based on a line of best fit, what is the expected salary in 2025. Hint: Use at least 2 decimal points in your equation.

• $49,100

• $48,300

• $51,200

• $47,700

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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

What is the equation of the line of best fit?

• y= 2x

• y=3x+7

• y= $\frac{1}{2}x\ +3$

• y= $-\frac{1}{2}x\ -3$

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TEKS.MATH.8.5D

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

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TEKS.MATH.8.5D

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points

Tags

TEKS.MATH.8.5D