A, write an equation whose graph is a parabola whose vertex is (3/4,-3)

B, write an equation whose graph is a parabola that opens downward and has an axis of symmetry x=-4

C, Write an equation whose graph is a parabola opens upward and has a y-intercept of -1/2

D, Write an equation whose graph is a parabola whose vertex is (-3,4) with a y intercept of 1