document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=49238>Question 49238</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the slope of the ling PQ. <BR>\n" );
document.write( "P is (13,2) and Q is (-5,26)\r<BR>\n" );
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document.write( "Write the equation of the line through the points P and Q in the form of y=mx+b. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #32705 by </B><A HREF=/tutors/aboutme.mpl?userid=Osran_Shri><B>Osran_Shri(18)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Osran_Shri><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=32705\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Point P ( x=13, y=2) Point Q ( x1= -5, y1 = 26)\r<BR>\n" );
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document.write( "In y = mx + b equation Slope of Line PQ is :\r<BR>\n" );
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document.write( "m = Delta ( Y ) / Delta (x)<BR>\n" );
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document.write( "m = (y1 - y)/(x1-x) = (26-2) / (-5-13) = -(24/18)= -1.3333 ( Note : negative slope )\r<BR>\n" );
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document.write( "Therefore Slope m = -1.333\r<BR>\n" );
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document.write( "Now Constant b = Y intercept i.e., Point where line PQ crosses Y axis at x=0\r<BR>\n" );
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document.write( "y = mx +b<BR>\n" );
document.write( "b = y - mx = y1-mx1 <BR>\n" );
document.write( "b = 2 - (-1.333)(13) = 2 + 17.329 = 19.329 = 19.33( rounded off to 2 digits after decimal point)\r<BR>\n" );
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document.write( "Therefore : Foa a line PQ : Slope m = -1.333 and b = 19.33\r<BR>\n" );
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document.write( "Now Equation can be written in standard format as below :\r<BR>\n" );
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document.write( "y = mx + b \r<BR>\n" );
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document.write( "y = -1.333x + 19.33\r<BR>\n" );
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document.write( "Thats all...<BR>\n" );
document.write( "B.Shridhar\r<BR>\n" );
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