The graph of a polynomial function is given P x 12x 3x 1 6 4 y intercept x y y x y 6 4 2 2 4 6 2 4 a From the graph find the x and y intercepts If an answer does not exist enter DNE x intercepts x y smaller x value 6 X larger x value b Find the coordinates of all local extrema If an answer does not exist enter DNE