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OpenStudy (anonymous):
HELP WILL GIVE MEDAL Find the standard form of the equation of the parabola with a focus at (0, -3) and a directrix at y = 3.
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OpenStudy (mathmale):
Use the fact that the VERTEX is exactly halfway between the focus and the directrix. Find the coordinates of the vertex, please.
OpenStudy (campbell_st):
if you plot the information you will also be able to see the concavity of the parabola. graphing or shetching should always be a 1st step
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