document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1058949>Question 1058949</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Line QR goes through points Q(0, 1) and R(2, 7). Which equation represents line QR?<BR>\n" );
document.write( "y – 1 = 6x<BR>\n" );
document.write( "y – 1 = 3x<BR>\n" );
document.write( "y – 7 = 2x – 6<BR>\n" );
document.write( "y – 7 = x – 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #674023 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=674023\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "One way to write the equation of a straight line is slope-intercept form:\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y+=+mx+%2B+b+ ALIGN=MIDDLE  ALT=\"+y+=+mx+%2B+b+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where:<BR>\n" );
document.write( "m = slope<BR>\n" );
document.write( "b = y-intercept  (the point Q tells us b=1 because at x=0, y=1)\r<BR>\n" );
document.write( "\n" );
document.write( "Slope, m, is found by \"rise over run\"  or \"change in y over change in x\":\r<BR>\n" );
document.write( "\n" );
document.write( "    m =  (7-1)/(2-0) = 3\r<BR>\n" );
document.write( "\n" );
document.write( "So it should be clear now which answer is correct.    </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );