Question

Data regarding fuel efficiency of an airliner were collected. The graph shows the correlation between the distance traveled (in thousands of miles) and the altitude (in thousands of feet):

Estimate the average rate of change from x = 15 to x = 19.

A. -3.25
B. 4
C. -4
D. -0.31

Answer 1

A. −3.25

Explanation:

I just took the quiz lol

Answer 2

Option A. -3.25

Explanation:

we know that

To find the average rate of change, we divide the change in the output value by the change in the input value

so

the average rate of change is equal to

`(f(b)-f(a))/(b-a)`

In this problem we have

`a=15`

`b=19`

`f(a)=f(15)=15`

`f(b)=f(19)=2`

Substitute

`(2-15)/(19-15)`

`(-13)/(4)`

`-3.25`