document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1014943>Question 1014943</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why is any linear inequality not 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 #631256 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=631256\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Graphically speaking, the solution set of a linear inequality is a region in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R%5E2 ALIGN=MIDDLE  ALT=\"R%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  This means any vertical line will cross the solution set in at least two points, violating the vertical line test, an essential criterion for functionality. </SPAN>\n" );
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