document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890589>Question 890589</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the equation of a line passing through the points (-3,6) and (1,2)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #539335 by </B><A HREF=/tutors/aboutme.mpl?userid=Lapric><B>Lapric(19)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Lapric><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=Lapric><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=539335\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the equation of a line passing through the points (-3,6) and (1,2)\r<BR>\n" );
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document.write( "To find the slope, we use the change in y over change in x formula. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%286-2%29+%2F+%28-3-1%29+ ALIGN=MIDDLE  ALT=\"+%286-2%29+%2F+%28-3-1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28-4%2F4%29+ ALIGN=MIDDLE  ALT=\"+%28-4%2F4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = (-1)\r<BR>\n" );
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document.write( "Plug that into the slope-intercept formula: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y=+%28-1%29x%2Bb+ ALIGN=MIDDLE  ALT=\"+y=+%28-1%29x%2Bb+\"   DISABLED_style= \"max-width:90%; height:auto;\" > We can just write this as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y=+%28-x%29%2Bb+ ALIGN=MIDDLE  ALT=\"+y=+%28-x%29%2Bb+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Pick one of the points (it doesn't really matter) and plug that into the formula. I want to use (1,2). \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2=%28-1%29%281%29%2Bb+ ALIGN=MIDDLE  ALT=\"+2=%28-1%29%281%29%2Bb+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2=%28-1%29%2Bb+ ALIGN=MIDDLE  ALT=\"+2=%28-1%29%2Bb+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b=%283%29+ ALIGN=MIDDLE  ALT=\"+b=%283%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So now the formula looks like <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y=%28-x%29%2B3+ ALIGN=MIDDLE  ALT=\"+y=%28-x%29%2B3+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "We can plot this formula to make sure that the points are on the graph. \r<BR>\n" );
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document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-10%2C+10%2C+-10%2C+10%2C+y=%28-x%29%2B3%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-10%2C+10%2C+-10%2C+10%2C+y=%28-x%29%2B3%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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