document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=924464>Question 924464</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Do (1,1), (2,2), and (3,4) lie on a straight line? And explain  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #560855 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=560855\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Gradient = y2 - y1/x2 - x1<BR>\n" );
document.write( "Gradient of the line connecting (1,1) and (2,2)<BR>\n" );
document.write( " =  2 - 1/2 - 1 = 1<BR>\n" );
document.write( "Gradient of the line connecting (2,2) and (3,4)<BR>\n" );
document.write( " =  4 - 2/3 - 2 = 2<BR>\n" );
document.write( "Different gradients, therefore not on the same straight line.\r<BR>\n" );
document.write( "\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );