Line and Curve of Best Fit Review

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

The number of complaints a company received at the end of each of six weeks is shown in this table. Based on the line of best fit, how many complaints should the company expect at the end of week 8?

• 75

• 91

• 96

• 110

A scientist dropped an object from a height of 200 feet. She recorded the height of the object in 0.5-second intervals. Her data is shown.

Based on a quadratic model, which best approximates the height at 3 seconds?

• 52 feet

• 55 feet

• 65 feet

• 80 feet

For which set of data would a linear model best fit?

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• 
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Using the equation of the line of best fit, which number is the best prediction of the output when the input is 13?

• 170

• 127

• 159

• 178

This table shows the number of months used and the approximate distances driven, in miles, for six buses in a school district. Using the line of best fit for these data, which value is the best prediction of the distance, in miles, by a bus that has been used for 40 months?

• 79,100

• 86,400

• 91,400

• 68,000

Which equation best represents this data set?

A scientist dropped an object from a height of 200 feet. She recorded the height of the object in 0.5-second intervals. Her data is shown. Based on the quadratic model, which best approximates the height at 3 seconds?

• 80 feet

• 52 feet

• 55 feet

• 65 feet

The number of calls a company received at the end of six weeks is shown in the table. Based on the line of best fit, how many calls should the company expect at the end of week 8?

• 75

• 110

• 96

• 91

Using the quadratic curve of best fit, which equation most closely represents the set of data?