Posted by **mariya** on Tuesday, June 5, 2007 at 9:46pm.

I am creating a project for math in which I have to draw an object using: parabolas, hyperbolas, circles,etc.

We use conic section equations to identify where they are on the graph.

I have confusion about writing the equation of parabolas. I know the equation is 4px=y^2 but I can't find p because I don't know were the focus point is. I drew parabolas, how would I find the focus point (or directrix) to help me find p for the equation?

note: they don't give you an equation you need to make one yourself.

my vertex (11,3)

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