Identify the intervals on which each function is strictly increasing, strictly decreasing, or constant. X 8-6-4 2 4 6 8 -8 Select all that apply. constant on (0, co) constant on (-7, 0) constant on: (-4, 0) constant on ( 7, -4) strictly decreasing on: ( 7, co) strictly increasing on: (0, co) strictly decreasing on (-4, 0)