document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=90380>Question 90380</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How can I Determine which two equations represent perpendicular lines.<BR>\n" );
document.write( "(a)  y = 2x – 6<BR>\n" );
document.write( "(b)  y =  x + 6<BR>\n" );
document.write( "(c)  y = – x + 6<BR>\n" );
document.write( "(d)  y =  x – 6<BR>\n" );
document.write( "Thank you for your help in advance </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #65620 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=65620\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) has a slope of 2<BR>\n" );
document.write( "b) has a slope of 1<BR>\n" );
document.write( "c) has a slope of -1<BR>\n" );
document.write( "d) has a slope of 1<BR>\n" );
document.write( "Any perpendicular line must have a slope of the negative reciprical of the line it is pwerpendicular to. Thus:<BR>\n" );
document.write( "Line c) is perpendicular to both lines b) & d). </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );