Read Linear MB Graph

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 of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Select the statement that best describes the line.

• The line is the line of best fit.
• The line is NOT a line of best fit because it does not go through the origin.
• The line is NOT a line of best fit because it does not go through the middle of the data set.

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside.  Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8,300

• 8

• 7,300

• 9,300

Based on the graph, which statement ending would best supports the association?

"As the area of a garden increases, _____________________."

• The number of plants decreases.

• The number of plants stays the same

• The number of plants increases faster.

• The number of plants increases.

Which sentence best supports the relationship shown on this scatter plot?

• The more time spent training, the longer it takes to run 100 m.

• As the time spent training increases, the time to run 100 m decreases.

• As the time spent training decreases, the time to run 100 m decreases.

• There is no apparent association between the amount of time spent training and the time it takes to run 100 m.

• y = -5/8x + 6

• y = 5/8x + 6

• y =-8/5x + 6

• y = 8/5x + 6

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

• y = -25x + 170

• y = 25x + 170

• y = -(5/8) x + 170

• y = (5/8) x + 170

If m = -3/4 and b = 9, what is the equation of the trend line in y= mx + b?

• 0 = -3/4 (9) +9

• y = -3/4 x + 9

• y = -3/4 x - 9

• y = 3/4 + 9

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line given and write an equation.

• y = 0x +10

• y= 0.1x+10

• y= 10x +0

• y= 0.1x +0