document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=68476>Question 68476</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine which two equations represent perpendicular lines.\r<BR>\n" );
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document.write( "A y= 4/7x-3  B y= 3x-4/7  C y=-1/3x+4/7 D y= 1/3x-4/7\r<BR>\n" );
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document.write( "Please instruct me on how to do this </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #48798 by </B><A HREF=/tutors/aboutme.mpl?userid=rmromero><B>rmromero(383)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rmromero><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=48798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A y= 4/7x-3  B y= 3x-4/7  C y=-1/3x+4/7 D y= 1/3x-4/7\r<BR>\n" );
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document.write( "To determine which two equations are perpendicular, You can graph all the equation. If you have two nonvertical lines that are perpendicular, the slopes are the negative reciprocal of the orignal slope.\r<BR>\n" );
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document.write( "<br> B.) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+3x+-+4%2F7 ALIGN=MIDDLE  ALT=\"y+=+3x+-+4%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >, m = 3<BR>\n" );
document.write( "<br> C.) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=%28-1%2F3%29x+%2B+4%2F7 ALIGN=MIDDLE  ALT=\"y+=%28-1%2F3%29x+%2B+4%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >, m = -1/3<BR>\n" );
document.write( "3 is the negative reciprocal of -1/3.<BR>\n" );
document.write( "Therefore, Answer is B and C<BR>\n" );
document.write( "<br> Look at the graph.<BR>\n" );
document.write( "<br><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph+%28200%2C+200%2C+-8%2C+5%2C+-8%2C+5%2C+3x-4%2F7%2C+%28-1%2F3%29x%2B4%2F7%29 ALIGN=MIDDLE  ALT=\"graph+%28200%2C+200%2C+-8%2C+5%2C+-8%2C+5%2C+3x-4%2F7%2C+%28-1%2F3%29x%2B4%2F7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<br> Here's the graph of the rest of the two equations\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph+%28200%2C+200%2C+-8%2C+5%2C+-8%2C+5%2C+%284%2F7%29x-3%2C+%281%2F3%29x-4%2F7%29 ALIGN=MIDDLE  ALT=\"graph+%28200%2C+200%2C+-8%2C+5%2C+-8%2C+5%2C+%284%2F7%29x-3%2C+%281%2F3%29x-4%2F7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<br> The red line shows the graph y= 4/7x-3.<BR>\n" );
document.write( "The green line shows y= 1/3x-4/7\r<BR>\n" );
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document.write( " </SPAN>\n" );
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