document.write( "Question 884026: Write the equation of the quadratic function with roots -9 and and -3 and a vertex at (-6, -1).?? \n" ); document.write( "

Algebra.Com's Answer #533944 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"y=a%28x%2B9%29%28x%2B3%29\"$
\n" ); document.write( " $\"y=a%28x%5E2%2B12x%2B27%29\"$
\n" ); document.write( " $\"y=a%28x%5E2%2B12x%29%2B27a\"$
\n" ); document.write( " $\"y=a%28x%5E2%2B12x%2B36%29%2B27a-36a\"$
\n" ); document.write( " $\"y=a%28x%2B6%29%5E2-9a\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"-9a=-1\"$
\n" ); document.write( " $\"a=1%2F9\"$
\n" ); document.write( " $\"y=%281%2F9%29%28x%2B9%29%28x%2B3%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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