document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=836215>Question 836215</A>: <I><SPAN STYLE=\"word-break: break-all;\"> determine it the lines are parallel, perpendicular or neither <BR>\n" );
document.write( "-x+3y=11<BR>\n" );
document.write( "3x+y=12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #504027 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=504027\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> They are not parallel since they intersect at x = 5/2,   y = 9/2<BR>\n" );
document.write( "slope of one is -3<BR>\n" );
document.write( "slope of  -x+3y=11 is 1/3<BR>\n" );
document.write( "so they are  perpendicular </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );