CPM Homework Help : CCA Problem 4-65

A consumer magazine collected the following data for the fuel efficiency of cars (miles per gallon) compared to weight (thousands of pounds).

$e=49−8.4w$
$w$ is the weight ( $1000$ s of pounds)
and $e$ is the fuel efficiency (mpg).

Your teacher will provide you with a model of the graph.

Describe the association between fuel efficiency and weight.
Answer (a):
Moderately strong negative linear association with no apparent outliers.
Cheetah Motors has come out with a super lightweight sports utility vehicle (SUV) that weighs only $2800$ pounds. What does the model predict the fuel efficiency will be?
Hint (b):
Use the graph to come up with a prediction of the fuel efficiency of the new SUV.