document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=249605>Question 249605</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the line containing the given pair of points.\r<BR>\n" );
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document.write( "(4,1) and (12,8)\r<BR>\n" );
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document.write( "What is the equation of the line?\r<BR>\n" );
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document.write( "y = ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181754 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=181754\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (4,1) and (12,8)<BR>\n" );
document.write( "Y=mX+b<BR>\n" );
document.write( "Slope=(y2-y1)/(x2-x1)=(8-1)/(12-4)=7/8 is the slope<BR>\n" );
document.write( "1=7*4/8+b<BR>\n" );
document.write( "1=28/8+b<BR>\n" );
document.write( "b=1-28/8<BR>\n" );
document.write( "b=8/8-28/8<BR>\n" );
document.write( "b=-20/8=-2.5 ans. for the y intercept.<BR>\n" );
document.write( "y=7x/8-2.5<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+7x%2F8+-2.5%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+7x%2F8+-2.5%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 7x/8 -2.5).  </SPAN>\n" );
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