document.write( "Question 983058: \r
\n" ); document.write( "\n" ); document.write( "Which rule below represents a quadratic function with vertex (4 ,-5) and passing through the point (0, -1)?\r
\n" ); document.write( "\n" ); document.write( " y=(x-4)^2-5
\n" ); document.write( " y=(x-4)(x+5)-1
\n" ); document.write( " y = 0.25 (x - 4)^2 - 5
\n" ); document.write( " y = 0.12 (x - 4)^2 - 5
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Algebra.Com's Answer #603857 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Start with vertex form,
\n" ); document.write( "\"y=a%28x-4%29%5E2-5\"
\n" ); document.write( "Use the point.
\n" ); document.write( "\"-1=a%280-4%29%5E2-5\"
\n" ); document.write( "\"-1=a%2816%29-5\"
\n" ); document.write( "\"a%2816%29=4\"
\n" ); document.write( "\"a=4%2F16\"
\n" ); document.write( "\"a=1%2F4\"
\n" ); document.write( "\"y=%281%2F4%29%28x-4%29%5E2-5\"
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