document.write( "Question 535263: i have to find a quadratic function in standard form for these set of points (-1,2),(0,1),(1,-4)
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Algebra.Com's Answer #351844 by scott8148(6628)\"\" \"About 
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y = ax^2 + bx + c ___ plug the points into the general equation
\n" ); document.write( "___ then solve the resulting linear system for the coefficients (a, b, c)\r
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\n" ); document.write( "\n" ); document.write( "2 = a(-1)^2 + b(-1) + c ___ 2 = a - b + c\r
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\n" ); document.write( "\n" ); document.write( "1 = a(0)^2 + b(0) + c ___ 1 = c\r
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\n" ); document.write( "\n" ); document.write( "-4 = a(1)^2 + b(1) + c ___ -4 = a + b + c
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