document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=425783>Question 425783</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How can you recognize if two lines are perpendicular on a graph? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296349 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296349\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How can you recognize if two lines are perpendicular on a graph?<BR>\n" );
document.write( "They are perpendicular if the product<BR>\n" );
document.write( "of their slopes is -1.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Example:<BR>\n" );
document.write( "If one slope = 2/3<BR>\n" );
document.write( "and the other is -3/2<BR>\n" );
document.write( "the lines are perpendicular.<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============= </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );