Rewrite the quadratic function f x x 8x 3 in standard form f x a x h k and give the vertex help numbers f x Vertex Ex Quadratic Function Reviewerview Use f x 2x 45x 3 for the following questions f x ax bx 1 Does the parabola open up or down The parabola opens down 2 Determine the equation of the axis of symmetry b X 2a the vertex Xa 3 Determine the co H Q x 4 Determine the x and y intercepts x ints set f x 0 y int set ka0 2 0 3 0 help points 6 2 8 S 2 0 2x 5x 3 0 27 5x 3 OF 2x 12x 3 2x 1 0 or X 3 0 x 3 G