document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140964>Question 1140964</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me!<BR>\n" );
document.write( "Triangle ABC is formed by the points A(2,0), B(4,-4) and C(-2,-2). Prove using a property of<BR>\n" );
document.write( "linear relations that this is a right triangle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #761508 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=761508\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A linear relation is a relation that forms a straight line.<BR>\n" );
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document.write( "In a right triangle, two line segments are perpendicular(right angle) to each other if their slopes are the negative reciprocal of each other<BR>\n" );
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document.write( "slope of line segment AB = (-4 -0)/(4 -2) = -2<BR>\n" );
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document.write( "slope of line segment BC = (-2 -(-4))/(-2 -4) = -1/3<BR>\n" );
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document.write( "slope of line segment CA = (0 -(-2))/(2 -(-2)) = 1/2<BR>\n" );
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document.write( "line segments AB and CA are perpendicular to each other, therefore triangle ABC is a right triangle<BR>\n" );
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