Question 1152038: what is the vertex, focus, and equation of directrix
(y+3)^2 = -4(x-2)
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website! what is the vertex, focus, and equation of directrix
The standard form is  , where the focus is ( , ) and the directrix is  .
If the parabola is rotated so that its vertex is (, ) and its axis of symmetry is parallel to the  -axis, it has an equation of  , where the focus is ( , ) and the directrix is
 ......here you have an equation of rotated parabola in vertex form
so,
 ,  ,  =>
= >vertex is at ( , )
=> focus is at (,) =( , ) = ( ,)
=> equation of directrix is => => =>
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