Part of the graph of the function f(x) = (x + 4)(x – 6) is shown below. Which statements about the function are true? Select two options. The vertex of the function is at (1,–25). The vertex of the function is at (1,–24). The graph is increasing only on the interval −4< x < 6. The graph is positive only on one interval, where x < –4. The grap