document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=210405>Question 210405</A>: <I><SPAN STYLE=\"word-break: break-all;\"> why is line x=4 a vertical line? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159002 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=159002\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> why is line x=4 a vertical line?<BR>\n" );
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document.write( "In a 2-dimentional system x = 4 and the y-values <BR>\n" );
document.write( "are unrestricted.<BR>\n" );
document.write( "So plot the two points: (4,1) and (4,5)<BR>\n" );
document.write( "Then draw a line thru them.  It will be a vertical line.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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