Use the graph to find any relative maxima or minima of the function. Find the intervals of which the function is increasing or decreasing.

The local max LaTeX:  \displaystyle (-4, 9) local min LaTeX:  \displaystyle (4, -5) . The function is increasing on LaTeX:  \displaystyle (-\infty, -4) \cup (4, \infty) and decreasing on LaTeX:  \displaystyle (-4, 4) .