# Math Help - Rate of change question.

1. ## Rate of change question.

Consider the function f(x) = x^3. What is the average rate of change of this function between x = -2 and x = 1?

The solution I got was 2.667

Can anyone tell me if I'm right?

2. $f(x) = x^3$

$\frac{f(1) - f(-2)}{1 - (-2)} = \frac{1 - (-8)}{3} = 3$