Homework Help: Math

Posted by Sophie on Wednesday, June 17, 2009 at 3:58pm.

Write the standard form of the equation of the parabola whose directrix is x=-1 and whose focus is at (5,-2)?
a) (y+2)^2 = 12(x+2)
b) y-2 = 12(x+2)
c) x+2 = 1/12(y+2)^2
d) x-2 = 1/12(y+2)^2

I get A and D? confused!

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