The graph of a polynomial function is given. P(x) = 1x4 _ 4 3 y 4 2 -4 -2 2 -2 (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) (x , y) = (larger x-value) y-intercept ( x , Y ) = (b) Find the coordinates of all local extrema. (If an answer does not exist, enter DNE.) local minimum (x, y ) = local maximum (x, y ) =