Use a graph to find the range of the function on the given interval below:
$$f(x) = \sqrt{ 9 - x^2 } \quad\mbox{on}\quad -3 \leq x \leq 2$$

On a separate piece of paper sketch a graph of $f(x)$ and determine the domain and range.

What is the range of $f(x)$ on this interval? help (inequalities)