document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=33995>Question 33995</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0130686085/algebrahomeworkh>prentice hall pre algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A triangle has vertices (-2,1),(5,1),and(0,6)What is its area. Could someone explain to me how this is done. Thanks for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #20363 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=20363\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> to find the area from 3 co-ordinates, you use something called the determinant, based upon matrix theory.\r<BR>\n" );
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document.write( "I am assuming you haven't done this, so i shall just quote the \"formula\" for you:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+area+=+%281%2F2%29abs%28%28x%5B1%5Dy%5B2%5D%29+-+%28x%5B2%5Dy%5B1%5D%29+%2B+%28x%5B2%5Dy%5B3%5D%29+-+%28x%5B3%5Dy%5B2%5D%29+%2B+%28x%5B3%5Dy%5B1%5D%29+-+%28x%5B1%5Dy%5B3%5D%29+%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "where the 3 coordinates are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x%5B1%5Dy%5B1%5D%29+ ALIGN=MIDDLE  ALT=\"+%28x%5B1%5Dy%5B1%5D%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x%5B2%5Dy%5B2%5D%29+ ALIGN=MIDDLE  ALT=\"+%28x%5B2%5Dy%5B2%5D%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x%5B3%5Dy%5B3%5D%29+ ALIGN=MIDDLE  ALT=\"+%28x%5B3%5Dy%5B3%5D%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "jon.<BR>\n" );
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