document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=621411>Question 621411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the coordinates of the vertices of triangle ABC formed by the intersection of the lines x+y=0, x=0, y=x-1. Hence find the area of triangle ABC? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390724 by </B><A HREF=/tutors/aboutme.mpl?userid=Emsley><B>Emsley(35)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Emsley><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=390724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=0 meets x=0 at (0,0)  y=x-1 meets x=0 at (0,-1)<BR>\n" );
document.write( "Solving x+y=0 and y=x-1 simultaneously sub y=x-1 into x+y=0 we get x+x-1=0<BR>\n" );
document.write( "2x=1 x=1/2 Sub back to get y=-1/2<BR>\n" );
document.write( "So points are (0,0) (0,-1) and (1/2,-1/2) </SPAN>\n" );
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