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Identify the equation of the parabola with its focus at (-4,7) and the directrix y=1. 

A) 24(y-3)=(x+4)^2 

B) 12 (y-4)=(x+4)^2 

C) 24 (y-7)=(x+4)^2 

D) -12(y+4)=(x+4)^2

 Jun 26, 2016
 #1
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The vertex is (-4,4)   and p  =  3

 

The equation  is

 

4(3)(y - 4)  = (x + 4)2

 

12 (y - 4)  = (x + 4)2

 

 

 

cool cool cool

 Jun 26, 2016

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