SOLUTION: Find the vertex, focus, and directrix of th eparabola given by the equation x^2 - 8x -16y + 0

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Question 857853: Find the vertex, focus, and directrix of th eparabola given by the equation
x^2 - 8x -16y + 0

Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!
Something is missing. An must have an sign.
Maybe you meant to type and you got a + sign instead of the = sign.

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is the equation of a parabola with the vertical axis of symmetry
<--> ,
the vertex at (4,-1), which is the lowest value can take,
and a focal distance of .
That means that the focus is (4,3),
units above the vertex,
and the directrix is the line ,
units below the vertex.


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