Section 4.3 How Derivatives Affect the Shape of a Graph 1. (3 pts.) Use the given graph of f to find the following: (a) The open interval(s) on which f is increasing. w N (b) The critical number(s) of f (excluding the end points). S -3 -2 -1 3 LWNE (c) The open interval(s) on which f is concave downward. (d) The coordinates of the point(s) of inflection. 2