3. Use the table of f(x)=-4x?. Over what interval is the function increasing? Over what interval is the function decreasing? (MAFS.912.F-IF.2.4) Х f(x) -16 -2 -4 (x, y) (-2,-16) (-1,-4) (0,0) (1,-4) (2, -16) 0 0 1 -4 2 -16 a. decreasing over all real numbers b. decreasing over x < 0 and increasing over x > 0 increasing over x < 0 and decreasing over x > 0 d. increasing over all real numbers C.​