Scatter Plots and Equations

Which scatter plot shows a negative relationship?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.HSF-LE.A.1B

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

If m = 3 and b = 6, what is the correct slope intercept equation?

• y=3-6

• y=3x-6

• y=3x+6

• y=6x+3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Identify the slope and the coordinate of the following equations. y - 1 = 8(x + 2 )

• m: 8

  Point: (-2, 1)

• m: 8

  Point: (-1, 2)

• m: 8

  Point: (2, -1)

• m: 8

  Point: (1,-2)

Which scatter plot shows no relationship of any kind?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.EE.B.5

Choose the graph with a trend line that best fits the data.

• graph 1

• graph 2

• graph 3

• graph 4

Tags

CCSS.8.EE.B.5

Write the an equation for the graph shown.

• -2y = x + 4

• 2y = x +2

• y = 1/2x + 2

• 2y = -x - 4

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

• y=163.41x + 4.19

• y=-163.41x + 4.19

• y=-4.19x + 163.41

• y= 4.19x - 163.41
  

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

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