Algebra 1 Line of Best Fit

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

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 15x + 7

Tags

CCSS.8.EE.B.5

Which equation best represents the data?

•  y = 4x

•  y = -4x

•  y = 1/4x

•   y = -1/4 x

Tags

CCSS.8.EE.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

Which equation best represents the line of fit?

• y = x + 7.5

• y = -x +7.5

• y = 1/2x + 7.5

• y = -1/2x + 7.5

Which equation represents the line of best fit?

• y = 5/2x - 1

• y = 5/2x + 1

• y = -5/2x - 2.5

• y = 5/2x - 2.5

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

• As x decreases, y increases

Tags

CCSS.HSF-LE.A.1B

What is the equation of the line of best fit

• y = -2x + 10

• y = 10x + 2

• y = 2x + 10

• y = 10

Tags

CCSS.8.EE.B.5

Use your graphing calculator to enter this data, then calculate the equation for the line of best fit. (Round each decimal to the nearest tenth)

• y = -25.1x + 5.6

• y = 25.1x + 5.6

• y = -5.6x + 25.1

• y = 5.6x + 25.1

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

• Yes

• No

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