document.write( "Question 845330: Quadratic function in standard form whose graph passes though the given points.
\n" ); document.write( "(1,-2) (-2,1) (3,6)\r
\n" ); document.write( "\n" ); document.write( "I know it plugs into the equation ax^2+bx+c\r
\n" ); document.write( "\n" ); document.write( "but i have no idea how to plug them in.
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Algebra.Com's Answer #509226 by stanbon(75887)\"\" \"About 
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Quadratic function in standard form whose graph passes though the given points.
\n" ); document.write( "(1,-2) (-2,1) (3,6)
\n" ); document.write( "I know it plugs into the equation ax^2+bx+c = y
\n" ); document.write( "------
\n" ); document.write( "Equations:
\n" ); document.write( "Using (1,-2):: a + b + c = -2
\n" ); document.write( "Using (-2,1)::4a -2b + c = 1
\n" ); document.write( "Using (3,6):::9a +3b + c = 6
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\n" ); document.write( "Solve the system of equations:
\n" ); document.write( "I used my calculator to get:
\n" ); document.write( "a = 1
\n" ); document.write( "b = 01
\n" ); document.write( "c = -3
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\n" ); document.write( "Equation:
\n" ); document.write( "y = x^2 -3
\n" ); document.write( "-----------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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