Which polynomial function could be represented by the graph below? On a coordinate plane, a parabola opens up. It goes through (2, 0), has a vertex at (3, negative 3), and goes through (4, 0). f(x) = x2 – 6x 8 f(x) = 3x2 – 18x 24 f(x) = x2 6x 8 f(x) = 3x2 18x 24