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The equation of a parabola is (y+2)^2=12(x−5) .

What is the equation of the directrix of the parabola?

Kakarot_15  May 3, 2017
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(y+2)^2=12(x−5)

 

The vertex is  ( 5, -2)     and the parabola opens to the right

 

And  4p  =  12   →  p  = 3

 

So....the equation of the directrix is   x  =  2

 

 

 

cool cool cool

CPhill  May 3, 2017

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