Write an equation for the parabola with vertex at the origin.
-Focus $( 0 , - 3 )$
A) $x ^ { 2 } = - 3 y$
B) $x ^ { 2 } = - 12 y$
C) $y ^ { 2 } = - 3 x$
D) $y ^ { 2 } = - 12 x$

Name: Write an equation for the parabola with vertex at the origin. -Focus $( 0 , - 3 )$ A) $x ^ { 2 } = - 3 y$ B) $x ^ { 2 } = - 12 y$ C) $y ^ { 2 } = - 3 x$ D) $y ^ { 2 } = - 12 x$
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Question

Quizplus · Accepted Answer

The equation of a parabola with vertex at the origin and focus at $(0, -p)$ is $x^2 = -4py$. Here, $p = 3$, so the equation is $x^2 = -12y$.

Write an Equation for the Parabola with Vertex at the Origin