document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136922>Question 136922</A>: <I><SPAN STYLE=\"word-break: break-all;\"> By using Slopes form, show that (3, 1), (6, 3) and (2, 9) are the vertices of 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 #100214 by </B><A HREF=/tutors/aboutme.mpl?userid=dolly><B>dolly(163)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dolly><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=100214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> hi,\r<BR>\n" );
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document.write( "The slope of the line joining (3,1) and (6,3) = (3-1)/(6-3)<BR>\n" );
document.write( "                                              = 2/3 -------------(1)\r<BR>\n" );
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document.write( "The slope of the line joining (6,3)and (2,9) = (9-3)/(2-6)<BR>\n" );
document.write( "                                             = 6/-4<BR>\n" );
document.write( "                                             = 3/-2 ------------(2)<BR>\n" );
document.write( "Multiplying (1) and (2) we get, (2/3)(3/-2)<BR>\n" );
document.write( "                              = -1\r<BR>\n" );
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document.write( "As the product of the slopes is -1, the lines are perpendicular .\r<BR>\n" );
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document.write( "==> the lines intersect  at right angle<BR>\n" );
document.write( "==> the given points are the vertices of a right triangle \r<BR>\n" );
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document.write( "good luck!!!\r<BR>\n" );
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document.write( "dolly                    </SPAN>\n" );
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