If a parabola's focus is at (3, 4) and directrix is at y = 2, what is the vertex form of the equation representing this parabola? y = -1/12(x + 3)^2 - 1 y = 1/4(x - 3)^2 + 3 y = -1/12(x - 3)^2 - 1 y = 1/4(x + 3)^2 + 3
Added by Brandon J.
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The vertex of the parabola is the midpoint between the focus and the directrix. Since the focus is at (3,4) and the directrix is at y=2, the vertex is at (3,3). Show more…
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