document.write( "Question 1182226: Hi there,
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\n" ); document.write( "\n" ); document.write( "find the quadratic function y=ax^2+2x+c find the value of a and c so that 2 becomes the maximum value at x=1.
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Algebra.Com's Answer #812190 by Edwin McCravy(20060) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "For the graph of\r\n" );
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document.write( "to have a maximum value, it must open downward which means that its leading\r\n" );
document.write( "coefficient, a, must be negative.\r\n" );
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document.write( "y is its maximum value at the vertex when x=1, so we substitute 1 for x and 2\r\n" );
document.write( "for y\r\n" );
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document.write( "The formula for the x coordinate of the vertex is:\r\n" );
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document.write( "So\r\n" );
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document.write( "Substitute -1 for a in\r\n" );
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document.write( "To check, substitute -1 for a and 1 for c in\r\n" );
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document.write( "Then graph:\r\n" );
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document.write( "Edwin

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