document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=73811>Question 73811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help me please figure this out. I don't get it???\r<BR>\n" );
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document.write( "Are the following lines parallel, perpendicular, or neither?<BR>\n" );
document.write( "   L1 through (–4, –7) and (1, 3)<BR>\n" );
document.write( "   L2 through (2, 6) and (4, 10) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52779 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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/cgi-bin/show-face.mpl?user=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=52779\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Call the slopes <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D ALIGN=MIDDLE  ALT=\"m%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B2%5D ALIGN=MIDDLE  ALT=\"m%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "They are parallel if <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+m%5B2%5D ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+m%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "They are perpendicular if <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+-1%2Fm%5B2%5D ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+-1%2Fm%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now find the slopes, which is (change in y) / (change in x)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+%28-7+-+3%29+%2F+%28-4+-+1%29 ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+%28-7+-+3%29+%2F+%28-4+-+1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+-10+%2F+-5 ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+-10+%2F+-5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+2 ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B2%5D+=+%286+-+10%29+%2F+%282+-+4%29 ALIGN=MIDDLE  ALT=\"m%5B2%5D+=+%286+-+10%29+%2F+%282+-+4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B2%5D+=+-4+%2F+-2 ALIGN=MIDDLE  ALT=\"m%5B2%5D+=+-4+%2F+-2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B2%5D+=+2 ALIGN=MIDDLE  ALT=\"m%5B2%5D+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m%5B1%5D+=+m%5B2%5D ALIGN=MIDDLE  ALT=\"m%5B1%5D+=+m%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so the lines are parallel </SPAN>\n" );
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