Finding a Line of Best Fit

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

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

Tags

CCSS.HSF-LE.A.1B

The table shows the height of a tree for various years after it was planted. Using the line of best fit, how tall would the tree be 30 years after it was planted? Round your answer to the nearest whole number.

• 22 feet

• 23 feet

• 36 feet

• 37 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

Which scatterplot most likely has a line of best fit represented by y = - 2x + 1

• W

• X

• Y

• Z

Tags

CCSS.8.EE.B.5

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15 

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Tags

CCSS.8.EE.B.5

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

• Yes

• No

Tags

CCSS.8.EE.B.5

If the line of best fit is given, y = 31.45x - 242.3, where x represents hours and y represents income, determine the predicted income if 22 hours were worked on an assembly job.

• $207.30

• $449.60

• $691.90

• $543.30

Tags

CCSS.HSF.LE.B.5

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 6 chapters. 

• ≅100 pages

• ≅170 pages

• ≅60 pages

• ≅20 pages