Line of Best Fit Slope Interpretation

What is the slope of the line of best fit?

• m = 5/2

• m = 2/5

• m = -2/5

• m = 5

What is the best interpretation of the slope of the line of best fit?

• For every 5 degrees the high temperature goes up, the amount of hot cocoa sold goes down by 4.

• For every 4 degrees the high temperature goes up, the amount of hot cocoa sold goes down by 5.

• For every 5 degrees the high temperature goes up, the amount of hot cocoa sold goes up by 4.

• For every 4 degrees the high temperature goes up, the amount of hot cocoa sold goes up by 5.

What is the best interpretation of the slope of the line of best fit?

• The weight of a catfish increases by 2 pounds for every 1 inch in length.

• The weight of a catfish decreases by 2 pounds for every 1 inch in length.

• The weight of a catfish increases by 1 pound for every 2 inch in length.

• The weight of a catfish decreases by 1 pound for every 2 inch in length.

A line of best fit was drawn to the plotted points in a data set below. Based on the line of best fit, for what y-value does x=4?

• y = 6

• y = 10

• y = 8

• y = 4

y = 1.45x + 22

• y = 1.45x + 22

• y = -2x + 15

• y = 1.33x + 30

• y = -1.5x + 24

What does the slope mean in the context of the situation graphed?

• You burn 500 calories every 60 minutes of exercise.

• You eat 500 calories when you eat out 60 times.

• You burn 100 calories every 10 minutes of exercise.

• You should not exercise.

• A

• B

• C

• D

A group of students did an experiment to see how drinking cups of coffee right before bed affected sleep.  The results are shown below in the scatter plot with a line of best fit.  Use the given line of best fit to approximate the rate of change relative to the scatter plot.

• (7/5) hours/cup

• (5/7) hours/cup

• - (7/5) hours/cup

• - (5/7) hours/cup

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

Select two points that could be used to find the slope of the line of best fit.

• (90, 1500)

• (120, 1750)

• (75, 1500)

• (105, 1500)