document.write( "Question 1053520: How do I determine if abs (y)=4-x is a function? \n" ); document.write( "
Algebra.Com's Answer #668743 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
You can graph it.
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\n" ); document.write( "It fails the vertical line test so it is not a function.
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