document.write( "Question 932453: write an equation of a parabola with vertex at the origin and the given focus, (0,-5) \n" ); document.write( "
Algebra.Com's Answer #566139 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
The directrix is the line y=5. This is the general point (0,5).\r
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\n" ); document.write( "\n" ); document.write( "\"sqrt%28%28x-0%29%5E2%2B%28y-%28-5%29%29%5E2%29=sqrt%28%28x-0%29%5E2%2B%28y-5%29%5E2%29\"
\n" ); document.write( "which simply uses the definition of parabola and the Distance Formula. Simplify!
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