document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256122>Question 256122</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How can you determine if two lines are perpendicular?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188281 by </B><A HREF=/tutors/aboutme.mpl?userid=EMStelley><B>EMStelley(208)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=EMStelley><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=EMStelley><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=188281\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two lines are perpendicular if their slopes are opposite reciprocals of each other.  \r<BR>\n" );
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document.write( "Example:\r<BR>\n" );
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document.write( "y=2x+9<BR>\n" );
document.write( "y=(-1/2)x-3 </SPAN>\n" );
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