If a parabola's focus is at (3, -5) and the directrix is at y = 1, what is the vertex form of the equation representing this parabola? Oy = 1(z+3)2 -2 Oy = -4(x -3)2 -2 Oy = -D(1 -3)2 -2 Oy = - 12 ( 1 + 3) 2 - 2