4. The graph of the first derivative f' of a function f is shown. (Assume the function isdefined only for 0 ? x ?9.) Just write your answers from the graph.YAy = f(x)min08a) On what interval(s) is f increasing?b) On what interval(s) is f decreasing?c) At what value(s) of x does f have a local maximum? (Enter your answers as a comma-separated list.) x =d) At what value(s) of x does f have a local minimum? (Enter your answers as a comma-separated list.) x =e) On what interval(s) is f concave upward? (Enter your ans er using interval notation.)f) On what interval(s) is f concave downward? (Enter your answer using interval notation.)g) What are the x-coordinate(s) of the inflection point of f? (Enter your answers as acomma-separated list.)x =