A graph of a function fis given. 4 2 (a) Find the local minimum value of f and the value of x at which it occurs. ( x, y ) = ( Find the local maximum values of f and the values of x at which they occur. ( x. V ) =( (smaller x-value) ( x, ) ) = C (larger x-value) (b) Find the intervals on which f is increasing. (Enter your answer using interval notation.) Find the intervals on which f is decreasing. (Enter your answer using interval notation.)