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Mathematics 6 Online
OpenStudy (anonymous):

derive the equation of a parabola with a focus at (4, -7) and a directrix of y= -15. Put the equation in standard form.

OpenStudy (anonymous):

@Firejay5 @kewlgeek555

OpenStudy (kewlgeek555):

I do not know what the h is a parabla. @ganeshie8 - he/she is very nice + helpful.

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