document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=685894>Question 685894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the line passing (-7,2) and (4,5) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #424649 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=424649\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the line passing (-7,2) and (4,5)<BR>\n" );
document.write( "Equation of a line: y=mx+b, m=slope, b=y-intercept<BR>\n" );
document.write( "For given problem:<BR>\n" );
document.write( "m=&#8710;y/&#8710;x=(5-2)/(4-(-7))=3/11<BR>\n" );
document.write( "equation: y=3x/11+b<BR>\n" );
document.write( "solve for b using one of given coordinates(4,5)<BR>\n" );
document.write( "5=3*4/11+b<BR>\n" );
document.write( "b=5-12/11<BR>\n" );
document.write( "b=55/11-12/11=43/11<BR>\n" );
document.write( "equation: y=3x/11+43/11<BR>\n" );
document.write( "see graph below:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C3x%2F11%2B43%2F11%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C3x%2F11%2B43%2F11%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );