document.write( "Question 930631: Which of these equations represent FUNCTIONs check all that apply\r
\n" ); document.write( "\n" ); document.write( "Y=x^2 - 3
\n" ); document.write( "Y=10X^3
\n" ); document.write( "Y=3X
\n" ); document.write( "X^2 + y^2=1
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Algebra.Com's Answer #569066 by tommyt3rd(5050)\"\" \"About 
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all are functions except the last \n" ); document.write( "
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