Find the vertex, focus, and directrix of the parabola. Graph the parabola.x2 = -12y
A. vertex: (0, 0)
focus: (-3, 0)
directrix: x = 3
B. vertex: (0, 0)
focus: (3, 0)
directrix: x = -3
C. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
D. vertex: (0, 0)
focus: (0, -3)
directrix: y = 3
Answer: D
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