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Write the conic equation of a parabola with a focus at (0, 12) and directrix at y = -4. Round to the nearest thousandth, if necessary

Guest Feb 15, 2017
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The vertex is at  (h, k)  =  (0,4)

 

And  p = 8    ......so we have

 

y - k  = (1/ [4p] ) ( x - h)^2

 

y - 4  = ( 1 / [4 *8]) (x - 0)^2

 

y = (1 /32)x^2 + 4

 

 

cool cool cool

CPhill  Feb 15, 2017

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