Answer
The net change is $5$
Average rate of change is $\frac{5}{4}$
Work Step by Step
The net change is a comparison of the corresponding domain of the two points of $x$.
As we can see on the graph, $f(2)=2$ and $f(6)=7$. From $2$ it changed to $7$, so the net change is $7-2=5$
We can calculate the average rate of change using the formula: $\frac{f(b)-f(a)}{b-a}$
$\frac{f(6)-f(2)}{6-2}= \frac{7-2}{6-2}\frac{5}{4}$
Average rate of change - $\frac{5}{4}$