document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=379188>Question 379188</A>: <I><SPAN STYLE=\"word-break: break-all;\"> determine whether the graphs of the equations are perpendicular<BR>\n" );
document.write( "8x -7y=4<BR>\n" );
document.write( "8y -7x=3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269247 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269247\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The two lines are not parallel.  The 1st has slope 8/7, while the bottom has slope 7/8.  Their slopes are not negative reciprocals of each other. </SPAN>\n" );
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