document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=86894>Question 86894</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131411160/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> This is another one I don't undersrtand. In order to write the equation (in slope intercept form) of the line passing through the points (3,1) and (4,2)<BR>\n" );
document.write( "I have to graph it right?\r<BR>\n" );
document.write( "\n" );
document.write( "I need a step-by-step on that too.\r<BR>\n" );
document.write( "\n" );
document.write( "Thanx\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #62839 by </B><A HREF=/tutors/aboutme.mpl?userid=dolly><B>dolly(163)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dolly><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=62839\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You do not have to graph it.\r<BR>\n" );
document.write( "\n" );
document.write( "Given points are (3,1) and (4,2)\r<BR>\n" );
document.write( "\n" );
document.write( "Slope of the line through these points is difference in y values/difference in x values\r<BR>\n" );
document.write( "\n" );
document.write( "So slope = (2-1)/(4-3)\r<BR>\n" );
document.write( "\n" );
document.write( "         = 1/1\r<BR>\n" );
document.write( "\n" );
document.write( "         = 1\r<BR>\n" );
document.write( "\n" );
document.write( "Slope point form is y - y1 = m(x - x1) where 'm' is the slope and (x1,y1) is the point through which the line passes.\r<BR>\n" );
document.write( "\n" );
document.write( "Considering (3,1) to be (x1, y1) the equation would be :\r<BR>\n" );
document.write( "\n" );
document.write( "  y - 1 = 1(x - 3)\r<BR>\n" );
document.write( "\n" );
document.write( "==> y - 1 = x - 3\r<BR>\n" );
document.write( "\n" );
document.write( "==> y = x - 3 + 1\r<BR>\n" );
document.write( "\n" );
document.write( "==> y = x - 2\r<BR>\n" );
document.write( "\n" );
document.write( "This is of the slope intercept form y = mx + c </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );