document.write( "Question 616455: How do you decide by looking at a graph or a curve whether y is defined as a function of x?\r
\n" ); document.write( "\n" ); document.write( "I did the vertical line test on few of the graphs, and decided that the ones that fail the test aren't a function of x. Is that how you determine if y is defined as a function of x. \n" ); document.write( "

Algebra.Com's Answer #387686 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
That's right. There should be only one f(x) for any given x \n" ); document.write( "

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