SOLUTION: What is the equation in standard form for the parabola with vertex (0,0) and directrix you= -4
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Question 1075737: What is the equation in standard form for the parabola with vertex (0,0) and directrix you= -4
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
If the form of the equation is
, then the
x-value of the vertex is at
Since the vertex is (0,0), then
and
and
and since the vertex is at (0,0)
So far I have:
------------------
Let the y-value of the focus =
The x-value of the focus will be the same as the vertex,
so the focus is at ( 0,4 )
-----------------------------------
According to the formula, a parabola with focus ( x[f], y[f] )
and directrix has the form
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