Select the correct answer. Which expressions are factors of the quadratic function represented by this graph? A graph plots a downward open parabola that rises from (negative 4, negative 8) through (0, 0) and (3, 2) and declines through (8, negative 3) on the x y coordinate plane. (x − 6) and (x 6) x and -6x x and (x − 6) x and (x 6)