document.write( "Question 1088197: what are the X intercepts of the parabola with vertex (5,-12) and Y intercept of(0,63)
\n" ); document.write( "i have tried running it though this equation $\"y-k=a%28x-h%29%5E2\"$ but i am confused on how the \"a\" value is found or produced. \n" ); document.write( "

Algebra.Com's Answer #702457 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use the point.
\n" ); document.write( "So, start with the vertex form,
\n" ); document.write( " $\"y%2B12=a%28x-5%29%5E2\"$
\n" ); document.write( "So then substituting the point,
\n" ); document.write( " $\"63%2B12=a%280-5%29%5E2\"$
\n" ); document.write( " $\"a=%2863%2B12%29%2F25\"$
\n" ); document.write( "Solve for $\"a\"$ . \n" ); document.write( "

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