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December 21, 2014

December 21, 2014

Posted by **Breauna** on Wednesday, January 13, 2010 at 11:14pm.

vertex:(0,0)

directrix:y= -1.

- math -
**drwls**, Thursday, January 14, 2010 at 5:34amThe equation x^2 = 4 py is a parabola with vertex at (0,0) and a directrix below it at y = -p. You want p to be 1.

Therefore 4p = 1 and p = 1/4

y = x^2 /4 is the equation

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