document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=45126>Question 45126</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0073016020/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Determine which TWO equations represent perpendicular lines.<BR>\n" );
document.write( "(1) y = 2x - 9 or (2) y = 1/2x + 9 or (3) y = -1/2x + 9 (4) y = 1/2x - 9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #29975 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=29975\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine which TWO equations represent perpendicular lines.<BR>\n" );
document.write( "(1) y = 2x - 9<BR>\n" );
document.write( "SLOPE=2<BR>\n" );
document.write( " or (2) y = 1/2x + 9 <BR>\n" );
document.write( "SLOPE=1/2.....PRODUCT=2*1/2=1...NO<BR>\n" );
document.write( "or (3) y = -1/2x + 9<BR>\n" );
document.write( "SLOPE=-1/2.....PRODUCT=2*-1/2=-1...YES<BR>\n" );
document.write( " (4) y = 1/2x - 9<BR>\n" );
document.write( "SLOPE=1/2.....PRODUCT...=2*1/2=1...NO<BR>\n" );
document.write( "FOR LINES TO BE PERPENDICULAR,PRODUCT OF SLOPES=-1<BR>\n" );
document.write( "SO Y=2X-9 AND Y=(-1/2)X+9 ARE PERPENDICULAR </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );