document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=181194>Question 181194</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780618851881/algebrahomeworkh>College Algebra the Graphing Approach</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular or neither.\r<BR>\n" );
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document.write( "#56<BR>\n" );
document.write( "L1 (4,8), (-4,2)<BR>\n" );
document.write( "L2 (3,-5), (-1, 1/3) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135857 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=135857\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular or neither. <BR>\n" );
document.write( "#56<BR>\n" );
document.write( "L1 (4,8), (-4,2)<BR>\n" );
document.write( "slope = (8-2)(4--4) = 6/8 = 3/4<BR>\n" );
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document.write( "L2 (3,-5), (-1, 1/3)<BR>\n" );
document.write( "slope = (-5-(1/3)/(3--1) = (-16/3)/(4) = -4/3<BR>\n" );
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document.write( "Since (3/4)(-4/3) = -1, the lines are perpendicular.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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