19 Graded for Accuracy 1. Suppose the graph shown is the derivative -E graph f' (x) of some function f. Answer the following questions. (4 points each) a) On what intervals is f increasing? b) On what intervals if f decreasing? c) At what values does f have a local maximum? Explain your reasoning. d) At what values does f have a local minimum? Explain your reasoning. e) Approximate the points of inflection of f. f) Approximate the intervals of concavity (concave up and concave down) of f. g) Sketch a graph of f