The graph of the function f(x) = (x – 4)(x + 1) is shown below. which statement about the function is true? the function is increasing for all real values of x where x < 0. the function is increasing for all real values of x where x < –1 and where x > 4. the function is decreasing for all real values of x where –1 < x < 4. the function is decreasing for all real values of x where x < 1.5.