document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=132888>Question 132888</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could someone explain to me how you know aif a graph is a function.<BR>\n" );
document.write( "here are three points to work with.<BR>\n" );
document.write( "(-4,9) (2,2) (8,8) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #97152 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=97152\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since for each x there is one output, this means that this graph is a function. If we had the set of points\r<BR>\n" );
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document.write( "(-4,9) (2,2) (8,8) (2,5)\r<BR>\n" );
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document.write( "then it would not be a function since when x=2, then y=2 and 5 which is not possible for a function.  </SPAN>\n" );
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