Consider the following function. f ( x ) = x2 - 81 x2 - 6x - 27 (a) State the domain of the function. O all real numbers x except x = -3 all real numbers x except x = -3, 9 all real numbers x except x = 27 O all real numbers x except x = -9, 3 O all real numbers x except x = 3 X (b) Identify all intercepts. (If an answer does not exist, enter DNE.) x-intercept (x, y) = y-intercept (x, y) = (c) Find any vertical or horizontal asymptotes. (Enter your answers as a comma-separated list of equations. If there are no asymptotes, enter DNE.)