document.write( "Question 961632: Find the coefficient a,b, & c for quadratic equation y=ax^2+bx+c if graph has a max at (1,8) and passes through (3,0). Is 1,8 my vertex? is c 1/2? \n" ); document.write( "
Algebra.Com's Answer #587568 by josgarithmetic(39617)\"\" \"About 
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\"ax%5E2%2Bbx%2Bc=y\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%28a%2A1%5E2%2Bb%2A1%2Bc=8%2Ca%2A9%2Bb%2A3%2Bc=0%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%28a%2Bb%2Bc=8%2C9a%2B3b%2Bc=0%29\"\r
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\n" ); document.write( "\n" ); document.write( "Not useful. \r
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\n" ); document.write( "\n" ); document.write( "USE STANDARD FORM!
\n" ); document.write( "\"y=a%28x-h%29%5E2%2Bk\", the vertex being (h,k).\r
\n" ); document.write( "\n" ); document.write( "\"system%28y=a%28x-1%29%5E2%2B8%2C0=a%283-1%29%5E2%2B0%29\"\r
\n" ); document.write( "\n" ); document.write( "Important is to know how these two specific equations are found; and then you can continue solving for a, and you can finish the quadratic equation.\r
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\n" ); document.write( "YES, the given maximum, (1,8), IS THE VERTEX.
\n" ); document.write( "The question or instruction was to find coefficients a, b, and c. You can simply take your standard form finished equation, and perform the operations to simplify into general form.
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