document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106646>Question 106646</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are the following lines parallel, perpendicular or neither?<BR>\n" );
document.write( "L1 with equation x-3y =9<BR>\n" );
document.write( "L2 with equation 3x+y=3\r<BR>\n" );
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document.write( "I used the formula y=mx+b but I don't know if that's right.\r<BR>\n" );
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document.write( "9= x - 3y<BR>\n" );
document.write( "3 = x-y\r<BR>\n" );
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document.write( "3 = 3x+y<BR>\n" );
document.write( "1=x + y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77620 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=77620\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Are the following lines parallel, perpendicular or neither?<BR>\n" );
document.write( "L1 with equation x-3y =9<BR>\n" );
document.write( "L2 with equation 3x+y=3 \r<BR>\n" );
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document.write( "L1: 3y=x-9<BR>\n" );
document.write( "y=(1/3)x-3<BR>\n" );
document.write( "slope is 1/3<BR>\n" );
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document.write( "L2: y = -3x+3<BR>\n" );
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document.write( "slope is -3<BR>\n" );
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document.write( "Since (1/3)(-3)= -1 the lines are perpendicular.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H> </SPAN>\n" );
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