document.write( "Question 350651: Equation for the parabola whose vertex is at (5,3) and passes though the point (7,-1). The text doesn't explain how to solve these... \n" ); document.write( "

Algebra.Com's Answer #250625 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Look up \"Vertex form\" in the Index.
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\n" ); document.write( "Use the vertex form of a parabola, $\"y=a%28x-h%29%5E2%2Bk\"$
\n" ); document.write( " $\"y=a%28x-5%29%5E2%2B3\"$
\n" ); document.write( "Now use the point (7,-1) to solve for $\"a\"$ .
\n" ); document.write( " $\"-1=a%287-5%29%5E2%2B3\"$
\n" ); document.write( " $\"a%284%29%2B3=-1\"$
\n" ); document.write( "I leave it to you to complete the solution for $\"a\"$ .
\n" ); document.write( "Then plug that into your equation. \n" ); document.write( "

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