Consider the following y=x-6x + 12x y 201 18 16 14 12 10 8 6 N 1 2 X 0 3 4 5 (a) Estimate the coordinates of the relative maxima, relative minima, or horizontal points of inflection by observing the graph (If an answer does not exist enter ONE relative maxima relative minima (X - Horrontal points of inttection w) - 7 X (6) Usey) to find the critical values (Enter your answers as a comma-separated (a) Estimate the coordinates of the relative maxima, relative minima, or horizontal points of enter DNE.) relative maxima (x, y) relative minima (x, y) = (x, y) = 17 X horizontal points of inflection ) (b) Use y' = f'(x) to find the critical values. (Enter your answers as a comma-separated list.) X = (c) Find the critical points. (x, y) =