The graph of a function $h$ is shown below.
Use the graph of the function to find its average rate of change from $x=-3$ to $x=3$.
Simplify your answer as much as possible.

Step 1 ：The average rate of change of a function over an interval [a, b] is given by the formula: $\frac{h(b)-h(a)}{b-a}$

Step 2 ：In this case, we need to find the average rate of change of the function h from x = -3 to x = 3. However, without the graph or the function, we cannot proceed further. We need the values of h(-3) and h(3) to calculate the average rate of change.

Step 3 ：If we had the graph, we could find the y-coordinates corresponding to x = -3 and x = 3, which would give us h(-3) and h(3). Then we could substitute these values into the formula to find the average rate of change.

Step 4 ：If we had the function, we could substitute x = -3 and x = 3 into the function to find h(-3) and h(3). Then we could substitute these values into the formula to find the average rate of change.

Step 5 ：Without either the graph or the function, we cannot find the average rate of change.

Step 6 ：Final Answer: $\boxed{{\displaystyle \text{Without the graph or the function, we cannot find the average rate of change.}}}$