document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=888761>Question 888761</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which of the following relations is a function?   A.{ (1, 2),  (1, 3),  (2, 8),  (3, 9) }                                                B.{ (1, 2),  (2, 3),  (3, 4),  (4, 5) }    C.{ (3, -1),  (2, 3),  (3, 4),  (1, 7) }      D.{ (3, 0),  (4, -3),  (6, 7),  (4, 4) } </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #537666 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=537666\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A.{ (1, 2),  (1, 3),  (2,8), (3, 9) }\r<BR>\n" );
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document.write( "Not a function since x = 1 maps to y = 2, y = 3\r<BR>\n" );
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document.write( "B.{ (1, 2),  (2, 3),  (3, 4),  (4, 5) }\r<BR>\n" );
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document.write( "This is a function since every x maps to exactly one y value.\r<BR>\n" );
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document.write( "C.{ (3, -1),  (2, 3),  (3, 4),  (1, 7) }      \r<BR>\n" );
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document.write( "Not a function since x = 3 maps to y = -1, y = 4\r<BR>\n" );
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document.write( "D.{ (3, 0),  (4, -3),  (6, 7),  (4, 4) }\r<BR>\n" );
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document.write( "Not a function since x = 4 maps to y = -3, y = 4 </SPAN>\n" );
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