document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=567551>Question 567551</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the equation of the line which includes points (1,5) and (-2,-7)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #366611 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=366611\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the equation of the line which includes points (1,5) and (-2,-7)?<BR>\n" );
document.write( "**<BR>\n" );
document.write( "Standard form of equation for a straight line: y=mx+b, m=slope, b=y-intercept<BR>\n" );
document.write( "slope,m,=&#8710;y/&#8710;x=change in y/change in x=rise/run<BR>\n" );
document.write( "using two given points<BR>\n" );
document.write( "m=(-7-5)/(-2-1)=-12/-3=4<BR>\n" );
document.write( "equation: y=4x+b<BR>\n" );
document.write( "solving for b using one of given points(1,5)<BR>\n" );
document.write( "5=4*1+b<BR>\n" );
document.write( "b=1<BR>\n" );
document.write( "equation of line:<BR>\n" );
document.write( "y=4x=1 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );