document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1086290>Question 1086290</A>: <I><SPAN STYLE=\"word-break: break-all;\">  What is the domain (the first element or number, from each pair) of this relation:\r<BR>\n" );
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document.write( "{ (4,1), (5,2), (6,-1), (8,5) }<BR>\n" );
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document.write( "{4, 5, 6, 8}<BR>\n" );
document.write( "{4, 5, 6}<BR>\n" );
document.write( "{-1, 2, -1, 5}<BR>\n" );
document.write( "{4, -1, 5, 2} </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #700459 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=700459\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=\"black\" face=\"times\" size=\"3\">Each point is of the form (x,y). The x coordinate is listed first. \r<BR>\n" );
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document.write( "The domain is the set of all possible x values of a relation. So it's simply the set of all the x coordinates.\r<BR>\n" );
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document.write( "The x coordinates are {4, 5, 6, 8} which is why the answer is <font color=red>choice A</font></font> </SPAN>\n" );
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