document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=192946>Question 192946</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why is 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 #144822 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=144822\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x=4 for all values of y.  That makes it parallel to the y-axis, or vertical.<BR>\n" );
document.write( "You can plot any number of points:<BR>\n" );
document.write( "(4,0), (4,4), (4,100), (4,-777), etc.   </SPAN>\n" );
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