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OpenStudy (wwb00):
How to find equation of parabola from focus and directrix. (Question fixed)(HS Level Maths)
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OpenStudy (wwb00):
I don't want to use the equating the distances formulas. I rather use the other way. Could someone tell me the alternate method?
OpenStudy (wwb00):
\[\frac{ 1}{ 4p }(x-h)^2+k\]
OpenStudy (wwb00):
I don't remember how to use this formula.
OpenStudy (wwb00):
Write the equation for a parabola with a focus at (9,0) and a directrix at y=-4.
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