document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=504083>Question 504083</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the slope of the line that contains the points:P1 (-4,10) and P2 (6,-10)?<BR>\n" );
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document.write( "-10-10 over -6-4= 0 over 10 =0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #339505 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=339505\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P1 = (-4,10)<BR>\n" );
document.write( "P2 = (6,-10)<BR>\n" );
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document.write( "slope = change in y / change in x<BR>\n" );
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document.write( "change in y = -10 -10 = -20<BR>\n" );
document.write( "change in x = 6 -(-4) = 10<BR>\n" );
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document.write( "slope = -20/10 = -2<BR>\n" );
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document.write( "y = -2x + b<BR>\n" );
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document.write( "We can substitute one of the known points to find 'b'.<BR>\n" );
document.write( "Use P1, (-4,10)<BR>\n" );
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document.write( "10 = -2(-4) + b<BR>\n" );
document.write( "10 = 8 + b<BR>\n" );
document.write( "b = 2<BR>\n" );
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document.write( "y = -2x +2<BR>\n" );
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document.write( "We can check this solution using the other point, P2 = (6,-10).<BR>\n" );
document.write( "y = -2x + 2<BR>\n" );
document.write( "y = -2(6) + 2<BR>\n" );
document.write( "y = -12+2<BR>\n" );
document.write( "y =10<BR>\n" );
document.write( "OK<BR>\n" );
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