document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=270598>Question 270598</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What are the domain and range of each relation? Is the relation a function?\r<BR>\n" );
document.write( "\n" );
document.write( "E= {(40,10),(-18,27),(38,10),(57,-15)}<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #198193 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=198193\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What are the domain and range of each relation? Is the relation a function? <BR>\n" );
document.write( "E= {(40,10),(-18,27),(38,10),(57,-15)}<BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "Each ordered pair has a 1st element and a 2nd element.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Domain is the set of 1st elements: {40,-18, etc.<BR>\n" );
document.write( "Range is the set of 2nd elements: {10,27, etc.<BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "It is a function because each 1st element has just one 2nd element.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );