document.write( "Question 1106535: Which equation does NOT represent y as a quadratic function of x?
\n" ); document.write( "y + 3 = x(x + 4)
\n" ); document.write( "y – x = 2y + 16
\n" ); document.write( "(x – 3)(x + 6) = y
\n" ); document.write( "x(x + 7) = y
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Algebra.Com's Answer #721525 by rfer(16322)\"\" \"About 
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