document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=98831>Question 98831</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the value of Y so that the line through (-2,-1) and (10,y) is perpendicular to the line through (6,-2) and (5,7)\r<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 #71924 by </B><A HREF=/tutors/aboutme.mpl?userid=malakumar_kos@yahoo.com><B>malakumar_kos@yahoo.com(315)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=malakumar_kos@yahoo.com><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=71924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "       find the value of Y so that the line through (-2,-1) and (10,y) is perpendicular to the line through (6,-2) and (5,7)\r<BR>\n" );
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document.write( "     When two lines are perpendicular the product of their slopes =-1\r<BR>\n" );
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document.write( "            slope of line through (-2,-1) and (10,y) = y-(-1)/10-(-2)<BR>\n" );
document.write( "                                                   m = y+1/10+2<BR>\n" );
document.write( "                                                     = (y+1)/12\r<BR>\n" );
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document.write( "           slope of line through (6,-2)  and (5,7) = (7-(-2))/5-6\r<BR>\n" );
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document.write( "                                                 M = 7+2/-1<BR>\n" );
document.write( "                                                   = -9\r<BR>\n" );
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document.write( "                                     m.M = -1<BR>\n" );
document.write( "                                    (y+1).(-9)/12 = -1<BR>\n" );
document.write( "                                          (y+1) = -1.12/-9<BR>\n" );
document.write( "                                           y+1 = 4/3<BR>\n" );
document.write( "                                             y = 4/3-1<BR>\n" );
document.write( "                                               = 4-3/3 = 1/3\r<BR>\n" );
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document.write( "                    value of y = 1/3 </SPAN>\n" );
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