document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=148068>Question 148068</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which set of ordered pairs is a function? \r<BR>\n" );
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document.write( " (2,3),(-4,5),(2,7),(7,-2) \r<BR>\n" );
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document.write( " (2,3),(-4,5),(-2,7),(-4,-2) \r<BR>\n" );
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document.write( " (2,3),(-4,5),(-2,7),(7,7) \r<BR>\n" );
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document.write( " (2,3),(-4,5),(2,-7),(7,-2) \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108461 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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/cgi-bin/show-face.mpl?user=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=108461\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A \"function\" can provide only a \"single\" solution for any given input.<BR>\n" );
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document.write( "The sets provided are in (x,y) pairs:<BR>\n" );
document.write( " (2,3),(-4,5),(2,7),(7,-2) <BR>\n" );
document.write( " (2,3),(-4,5),(-2,7),(-4,-2) <BR>\n" );
document.write( " (2,3),(-4,5),(-2,7),(7,7) <BR>\n" );
document.write( " (2,3),(-4,5),(2,-7),(7,-2) <BR>\n" );
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document.write( "Looking at the first set:<BR>\n" );
document.write( " (2,3),(-4,5),(2,7),(7,-2) <BR>\n" );
document.write( "Notice that if 'x' is equal to 2, there are TWO solutions:<BR>\n" );
document.write( " (2,3),(2,7)<BR>\n" );
document.write( "So, this can't be a function.<BR>\n" );
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document.write( "Looking at the second set:<BR>\n" );
document.write( " (2,3),(-4,5),(-2,7),(-4,-2) <BR>\n" );
document.write( "Notice that if 'x' is equal to -4, there are TWO solutions:<BR>\n" );
document.write( " (-4,5),(-4,-2) <BR>\n" );
document.write( "So, this can't be a function.<BR>\n" );
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document.write( "Looking at the fourth set:<BR>\n" );
document.write( " (2,3),(-4,5),(2,-7),(7,-2) <BR>\n" );
document.write( "Notice that if 'x' is equal to 2, there are TWO solutions:<BR>\n" );
document.write( " (2,3),(2,-7)<BR>\n" );
document.write( "So, this can't be a function.<BR>\n" );
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document.write( "THEREFORE, the solution is set 3:<BR>\n" );
document.write( " (2,3),(-4,5),(-2,7),(7,7) \r<BR>\n" );
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