document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=379329>Question 379329</A>: <I><SPAN STYLE=\"word-break: break-all;\"> {(x, y): (absolute value sign)x (absolute value sign) + ( abs value) y (abs value) = 1}    what is the domain of this relation and is it a function? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269328 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269328\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The domain of |x| + |y| = 1 is the interval [-1,1].  It is not a function, because, suppose x = -0.5.  Then 0.5 + |y| = 1, or |y| = 0.5, or y = 0.5, -0.5 (two values). </SPAN>\n" );
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