Interpret Trend Line

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 chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.F.A.3

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? 
Hint: create the trend line first

• 65

• 92

• 70

• 76

Which best describes the form of this scatterplot?

• linear

• nonlinear

• scattered

Tags

CCSS.8.F.A.3

• 315

• 472.5

• 321

• 324

The equation of the trend line

is y hat= 1/2x +1. What does the x variable represent?

• The number of laps

• The amount of time in hours

• The amount of time in minutes

• How long it takes to go 0 laps

Tags

CCSS.HSF.LE.B.5

Sammy is selling his comic book collection on the internet. The scatterplot shows how many comic books he has left at the end of each day. Using the trend line, how many comic books should Sammy have left after 6 days?

• 15

• 10

• 30

• 8

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Sammy is selling his comic book collection on the internet. The scatterplot shows how many comic books he has left at the end of each day. Using the trend line, after how many days should Sammy predict to have 10 comic books left?

• 8

• 0

• 9

• 2

Which scatter plot could have a trend line whose equation is y hat= 3x + 10?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

What is the best equation for the trend line?

Tags

CCSS.8.EE.B.5