document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=591637>Question 591637</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the line that passes throught the points(-2,1)&(4,-8) Please I need help with these. 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 #375698 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=375698\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the line that passes throught the points(-2,1)&(4,-8)<BR>\n" );
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document.write( "Find the slope, m<BR>\n" );
document.write( "m = diffy/diffx = (1 - (-8))/(-2 - 4) = 9/-6<BR>\n" );
document.write( "m = -3/2<BR>\n" );
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document.write( "Use y = mx + b and either point to find b, the y-intercept<BR>\n" );
document.write( "-8 = (-3/2)*4 + b<BR>\n" );
document.write( "b = -8 + 6<BR>\n" );
document.write( "b = -2<BR>\n" );
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document.write( "The eqn is y = mx + b<BR>\n" );
document.write( "y = (-3/2)x - 2<BR>\n" );
document.write( "or, 3x + 2y = -4<BR>\n" );
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document.write( "not that bad?<BR>\n" );
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