document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=277590>Question 277590</A>: <I><SPAN STYLE=\"word-break: break-all;\"> decide whether the pair of lines is parallel, perpendicular or neither<BR>\n" );
document.write( "3x+5y=5<BR>\n" );
document.write( "5x+3y=7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #202110 by </B><A HREF=/tutors/aboutme.mpl?userid=nabla><B>nabla(475)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nabla><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=202110\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve each for y.<BR>\n" );
document.write( "1) y=-3x/5+1<BR>\n" );
document.write( "2) y=-5x/3+7/3<BR>\n" );
document.write( "So slopes (m for y=mx+b) are:\r<BR>\n" );
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document.write( "1) m=-3/5<BR>\n" );
document.write( "2) m=-5/3\r<BR>\n" );
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document.write( "So these are reciprocals of eachother, however, for perpendicularity (or orthogonality ) we require negative reciprocals. So we say neither.\r<BR>\n" );
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document.write( "In fact, the graph shows a moderately compressed cross, when we would want a \"perfect\" cross, if you get my meaning. </SPAN>\n" );
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