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 (-2, 6) local min LaTeX:  \displaystyle (6, -9) . The function is increasing on LaTeX:  \displaystyle (-\infty, -2) \cup (6, \infty) and decreasing on LaTeX:  \displaystyle (-2, 6) .