document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=519481>Question 519481</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find k so that the line through  4,k and 2,-1 is perpendicular to y= 2.5x-3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345626 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=345626\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> line through  4,k and 2,-1 is perpendicular to \r<BR>\n" );
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document.write( "y= 2.5x-3<BR>\n" );
document.write( "slope = 2.5=>5/2\r<BR>\n" );
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document.write( "perpendicular line will have slope -2/5  ( negative reciprocal)\r<BR>\n" );
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document.write( "slope of line between two points<BR>\n" );
document.write( "(y2-y1)/(x2-x1)=m\r<BR>\n" );
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document.write( "(-1-k)/(2-4)= -2/5\r<BR>\n" );
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document.write( "-1-k=-2*-2/5<BR>\n" );
document.write( "-1-k=-4/5<BR>\n" );
document.write( "k=-1+4/5<BR>\n" );
document.write( "k=-1/5<BR>\n" );
document.write( "k=-0.2\r<BR>\n" );
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document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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