document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1196826>Question 1196826</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Verify that the points (2, -1), (5, 5) and (6, -3) is a right triangle. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #829836 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39629)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=829836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> SLOPES of every pair of points - exactly two pair of points will have slopes which are negative reciprocals.\r<BR>\n" );
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document.write( "Yes.  The point (2,-1) is the vertex with the right-angle.\r<BR>\n" );
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document.write( "YOU WISH TO VERIFY THAT THE THREE POINTS FORM A RIGHT TRIANGLE.<BR>\n" );
document.write( "YOU FIND BY SLOPE CALCULATION THAT  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A%28-1%2F2%29=-1 ALIGN=MIDDLE  ALT=\"2%2A%28-1%2F2%29=-1\"   DISABLED_style= \"max-width:90%; height:auto;\" > FOR TWO OF THE PAIR OF POINTS----THAT IS YOUR VERIFICATION. </SPAN>\n" );
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