(1 point) The graph of the function f(x) is -4 1,0 (the horizontal axis is x.) Consider the differential equation x' = f(x). List the constant (or equilibrium) solutions to this differential equation in increasing order and indicate whether or not these equalibria are stable, semi-stable (stable from one side, unstable from the other), or unstable. x = -4 help (numbers) unstable x = -1 help (numbers) semi-stable x = 1 help (numbers) stable x = 5/2 help (numbers) unstable