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OpenStudy (anonymous):
Find the standard form of the equation of the parabola with a focus at (-8, 0) and a directrix at x = 8.
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OpenStudy (anonymous):
How do I know if it is horizontal or vertical? do I use x2 = –ay
OpenStudy (anonymous):
Look at the directrix, it is x =8 |dw:1437346236528:dw|
OpenStudy (anonymous):
The parabola MUST be |dw:1437346268309:dw|
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