document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200271>Question 1200271</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the line through the points (-5,3) and (-6,-1). Express the equation of the line in slope=intercept form, y=mx+b.\r<BR>\n" );
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document.write( "So I know y2-y1/x2-x1 so I did that (-1-3/-6-(-5)=(-4/1)\r<BR>\n" );
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document.write( "y=mx+b so 3=-(4/1)(-5)+b<BR>\n" );
document.write( "solved for that to get b=-17 <BR>\n" );
document.write( "y=(-4/1)x-17\r<BR>\n" );
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document.write( "Your slope calculation is a bit off.\r<BR>\n" );
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document.write( "This is what it should be<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+slope+=+rise%2Frun+=+matrix%281%2C3%2C%22change%22%2C%22in%22%2C%22y%22%29%2Fmatrix%281%2C3%2C%22change%22%2C%22in%22%2C%22x%22%29 ALIGN=MIDDLE   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=m+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29 ALIGN=MIDDLE  ALT=\"m+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29\"   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=m+=+%28-1+-+3%29%2F%28-6+-+%28-5%29%29 ALIGN=MIDDLE  ALT=\"m+=+%28-1+-+3%29%2F%28-6+-+%28-5%29%29\"   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=m+=+%28-1+-+3%29%2F%28-6+%2B+5%29 ALIGN=MIDDLE  ALT=\"m+=+%28-1+-+3%29%2F%28-6+%2B+5%29\"   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=m+=+%28-4%29%2F%28-1%29 ALIGN=MIDDLE  ALT=\"m+=+%28-4%29%2F%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Note the -1 in the denominator\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=m+=+4 ALIGN=MIDDLE  ALT=\"m+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The slope is 4 aka 4/1.\r<BR>\n" );
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document.write( "A visual way to think of the slope: <BR>\n" );
document.write( "To move from (-6,-1) to (-5,3) we move 4 units up and 1 unit to the right<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%0D%0Adrawing%28400%2C400%2C-7%2C2%2C-5%2C7%2C%0D%0Agraph%28400%2C400%2C-7%2C2%2C-5%2C7%2C-1000%2C4%2Ax%2B23%29%2C%0D%0Agrid%281%29%2C%0D%0Ared%28circle%28-6%2C-1%2C0.06%29%29%2C%0D%0Ared%28circle%28-5%2C3%2C0.06%29%29%2C%0D%0Ared%28circle%28-6%2C-1%2C0.08%29%29%2C%0D%0Ared%28circle%28-5%2C3%2C0.08%29%29%2C%0D%0Ared%28circle%28-6%2C-1%2C0.1%29%29%2C%0D%0Ared%28circle%28-5%2C3%2C0.1%29%29%2C%0D%0Ared%28circle%28-6%2C-1%2C0.12%29%29%2C%0D%0Ared%28circle%28-5%2C3%2C0.12%29%29%2C%0D%0Ared%28circle%28-6%2C-1%2C0.14%29%29%2C%0D%0Ared%28circle%28-5%2C3%2C0.14%29%29%2C%0D%0Ablue%28arc%28-6%2C-0.5%2C1%2C1%2C90%2C270%29%29%2C%0D%0Ablue%28arc%28-6%2C0.5%2C1%2C1%2C90%2C270%29%29%2C%0D%0Ablue%28arc%28-6%2C1.5%2C1%2C1%2C90%2C270%29%29%2C%0D%0Ablue%28arc%28-6%2C2.5%2C1%2C1%2C90%2C270%29%29%2C%0D%0Ablue%28arc%28-5.5%2C3%2C1%2C1%2C180%2C360%29%29%0D%0A%29%0D%0A ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "slope = rise/run = 4/1<BR>\n" );
document.write( "rise = 4 = go up 4 units<BR>\n" );
document.write( "run = 1 = go to the right 1 unit\r<BR>\n" );
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document.write( "I'll let you finish up.<BR>\n" );
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