Use values of f' to sketch the graph of f and state whether f is increasing or decreasing at a point.

Use the first derivative test to determine all local minimum and maximum points of the function y = 1, 3-3x - 4 a.) Local maximum at ( - 2, - 8) O Local minimum at (2, - 4) b.) Local maximum at ( - 2, - 4) O Local minimum at (2, - 4) c.) Local maximum at (2, - 4) O Local minimum at ( - 2,4) d.) Local maximum at ( - 2,4) O Local minimum at (2, - 4)