Average rate of change calculation for a quadratic function over a given interval.
Check the final answer first, then review the worked steps.
Problem
Average rate of change calculation for a quadratic function over a given interval.
Step-by-step solution
Using the interval $[-2, 0]$, we have $a=-2$ and $b=0$. From the table, $f(-2)=0$ and $f(0)=8$. The average rate of change is $\frac{f(0)-f(-2)}{0-(-2)} = \frac{8-0}{0+2} = \frac{8}{2} = 4$.
Answer
4