document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=484494>Question 484494</A>: <I><SPAN STYLE=\"word-break: break-all;\"> is the following relations a function ? explain you answer (1,2) (2,3) (2,5) (2,7) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #331494 by </B><A HREF=/tutors/aboutme.mpl?userid=tinbar><B>tinbar(133)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tinbar><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=331494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A function requires that every input have only one output. In other words, if we have pairs that represent (input, output), if there exists a certain value for input in some pair, it should not occur again, unless of course it describes the same output.\r<BR>\n" );
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document.write( "The input value 2 causes a problem. It has outputs 3, 5, and 7. Since there is more than one output for some input, in this case 2, this relation does NOT satisfy the requirement to be a function as well. </SPAN>\n" );
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