document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=771456>Question 771456</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are the following lines parallel, perpendicular, or neither?<BR>\n" );
document.write( "L1 with equation x – 5y = 25<BR>\n" );
document.write( "L2 with equation 5x + y = 5<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #470242 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=470242\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> with equation x – 5y = 25<BR>\n" );
document.write( "5y=x-25<BR>\n" );
document.write( "/5<BR>\n" );
document.write( "y=(1/5)x -5<BR>\n" );
document.write( "slope m1 = (1/5)\r<BR>\n" );
document.write( "\n" );
document.write( "L2 with equation 5x + y = 5<BR>\n" );
document.write( "y=-5x+5<BR>\n" );
document.write( "slope m2=-5\r<BR>\n" );
document.write( "\n" );
document.write( "m1 * m2 = (1/5)*(-5) =-1\r<BR>\n" );
document.write( "\n" );
document.write( "therefore the lines are perpendicular\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );