document.write( "Question 574328: Is the relation a function? Explain.\r
\n" ); document.write( "\n" ); document.write( "{(2, 15), (15, –4), (–9, –7), (13, 14)}
\n" ); document.write( "

Algebra.Com's Answer #369028 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
{(2, 15), (15, –4), (–9, –7), (13, 14)}
\n" ); document.write( "I'm pretty sure it is a function because
\n" ); document.write( "none of these points line up vertically
\n" ); document.write( "( same x for 2 different y's )
\n" ); document.write( "Or, in other words, the dependant variables (y's)
\n" ); document.write( "all have different independant variables (x's).
\n" ); document.write( "
\n" );