Question

The graph shows the function f(x).

What is the function's average rate of change from x = 9 to x = 15?

Enter your answer in the box.

Answer 1

3/2

Explanation:

To find the rate of change

f(x2) - f(x1)

------------------ = rate of change

x2-x1

Looking at the graph

f(15) = 12

f(9) = 3

Substituting this into the equation

12-3

---------

15-9

9

------

6

3/2

The rate of change is 3/2