document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257235>Question 257235</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A line through the points (m, -9) and (7, m) has slope m. What is the value of m? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189152 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=189152\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A line through the points (m, -9) and (7, m) has slope m. What is the value of m?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "slope = (y2-y1)/(x2-x1)<BR>\n" );
document.write( "m = (m-(-9))/(7-m)<BR>\n" );
document.write( "m = (m+9)/(7-m)<BR>\n" );
document.write( "m(7-m) = (m+9)<BR>\n" );
document.write( "7m-m^2 = m+9<BR>\n" );
document.write( "7m = m^2+m+9<BR>\n" );
document.write( "0 = m^2-6m+9<BR>\n" );
document.write( "0 = (m-3)(m-3)<BR>\n" );
document.write( "m = 3 </SPAN>\n" );
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