document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=902595>Question 902595</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If there are two straight lines which are not parallel respectively <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax+%2B+by+%2Bc+=0 ALIGN=MIDDLE  ALT=\"ax+%2B+by+%2Bc+=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=px+%2B+qy+%2B+r+=0 ALIGN=MIDDLE  ALT=\"px+%2B+qy+%2B+r+=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >, \r<BR>\n" );
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document.write( "Find the equation of straight line which goes through their interception point and (0,0) point.\r<BR>\n" );
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document.write( "Me and other students use this formula and make <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0 ALIGN=MIDDLE  ALT=\"0\"   DISABLED_style= \"max-width:90%; height:auto;\" > because the line which we want to find goes through the point (0,0). And then we get a value for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=lambda ALIGN=MIDDLE  ALT=\"lambda\"   DISABLED_style= \"max-width:90%; height:auto;\" > .\r<BR>\n" );
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document.write( "We put that value to equation and take the equation of the straight line.\r<BR>\n" );
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document.write( "My teacher never taught us how this relationship come. She just told us to use it. I think she didn't know how to prove. Here's the formula.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28ax+%2B+by+%2Bc%29+%2B+lambda%28px+%2B+qy+%2B+r%29 ALIGN=MIDDLE  ALT=\"%28ax+%2B+by+%2Bc%29+%2B+lambda%28px+%2B+qy+%2B+r%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > =0\r<BR>\n" );
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document.write( "I want you to show me how this relationship come and a definition for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=lambda ALIGN=MIDDLE  ALT=\"lambda\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Thank you... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #547378 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=547378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Why are you insulting your teacher? </SPAN>\n" );
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