Question 78007
Write an equation of a parabola with a vertex at the origin and a directrix at y=5.
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Plot the vertex point and draw the directrix line.
That implies the equation has the form (x-0)^2=4p(y-0)
and p=5 (the distance from the directrip to the vertex.
EQUATION:
20y=x^2
y=(1/20)x^2
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Cheers,
Stan H.