document.write( "Question 1078986: Find the equation of a Parabola with Vertex: (2,-1) and directrix: x= -2\r
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\n" ); document.write( "(y-1) = 16(x+2)²
\n" ); document.write( "(y+1) = 16(x-2)²
\n" ); document.write( "(y+1)² = 16(x-2)
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Algebra.Com's Answer #693360 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
The vertex would give a (y+1), (x-2) picture, and the directrix at x=-2 would mean a parabola opening horizontally, so the y would be squared, not the x.
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