document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=115620>Question 115620</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are the following lines perpendicular?<BR>\n" );
document.write( "Line 1: y=x+3<BR>\n" );
document.write( "line 2: x-y=13 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #84154 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=84154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=mx+b m=slope<BR>\n" );
document.write( ".<BR>\n" );
document.write( "x-y=13<BR>\n" );
document.write( "x-x-y=-x+13<BR>\n" );
document.write( "-y=-x+13<BR>\n" );
document.write( "-y*-1=-x*-1+13*-1<BR>\n" );
document.write( "y=x-13<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=x+3<BR>\n" );
document.write( ".<BR>\n" );
document.write( "No, they are parallel because m is the same in each equation.<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );