document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=641473>Question 641473</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A line L1 has slope (9/4). The line that passes through which of the following pairs of points is perpendicular to L1?<BR>\n" );
document.write( "A.(3,3)and(-6,7)<BR>\n" );
document.write( "B.(6,5)and(-6,9)<BR>\n" );
document.write( "C.(3,-6)and(7,3)<BR>\n" );
document.write( "D.(7,-6)and(7,3)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #403675 by </B><A HREF=/tutors/aboutme.mpl?userid=benni1013><B>benni1013(206)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=benni1013><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=403675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> When dealing with perpendicular, look for a slope that has the negative inverse. In this case, you are look for a pair of points that has a slope of -4/9.<BR>\n" );
document.write( "I'm not going to give you the direct answer for this problem, but I will give you a couple of reminders.<BR>\n" );
document.write( "First, the equation for slope is the change in y over the change in x. Second, whatever you get your first \"y\" you must get your first \"x\" from. </SPAN>\n" );
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