document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=182387>Question 182387</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which set of ordered pairs is not a function?<BR>\n" );
document.write( "A. (-1, 0), (0, 1), (1,2), (2,3)<BR>\n" );
document.write( "B. (-1, 0), ( 0,0), (1,0), (2,0)<BR>\n" );
document.write( "C. (1, -1), (1, 0), (1,1), (1,2)<BR>\n" );
document.write( "D. (-1, 1), (0,0), (1,1), (2,2)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #136893 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=136893\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C) A function returns a unique y value for each x value. <BR>\n" );
document.write( "The relationship in C) returns 4 distinct y values for x=1, therefore it cannot be a function.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );