document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=108833>Question 108833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> is the points A(2,1),B(-4,1),C(-1,-3) Collinear or noncollinear </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #79351 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=79351\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For points to be collinear, the change in y divided by the change in x is constant and equal to the slope of the line connecting the two points. <BR>\n" );
document.write( "The slope between A and B is zero, since the change in y is zero (1-1=0).<BR>\n" );
document.write( "The slope between A and C is not zero, since the change in y is not zero (-3-1=-4). <BR>\n" );
document.write( "Therefore the points are not collinear. <BR>\n" );
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