The answer is C. This is because you set each factor equal to 0, then solve. You would do this because to find the x-intercepts (aka the zeros) of a quadratic equation, you need to seteach factor to zero.
x + 4 = 0 x = -4
x - 9 = 0 x = 9
so when the equation is set equal to zero, x equals -4 and 9. Labeled as points on a graph, this would mean the answer is C.