document.write( "Question 188057: Is the Relation y={{x-3}} a function?\r
\n" ); document.write( "\n" ); document.write( "one of the brackets is big and one is little, dont know if that makes a difference or not.
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Algebra.Com's Answer #140993 by Mathtut(3670)\"\" \"About 
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all lines are function except for vertical lines and those take the form of x=a
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\n" ); document.write( "try the vertical line test on any line and it will pass except for x=a...remember in a function there can be one and only one y value for any given x........so the line y=x-3 is a function
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