document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=216060>Question 216060</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the line 3x+ky=8 is perpendicular to the line 2x-5y=10, what is the value of k? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163217 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=163217\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  If the line 3x+ky=8 is perpendicular to the line 2x-5y=10, what is the value of k?<BR>\n" );
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document.write( "The slope m1 of 2x-5y=10 is 2/5.<BR>\n" );
document.write( "The slope m2 of lines perpendicular is the negative inverse, m2 = -5/2<BR>\n" );
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document.write( "The slope of 3x+ky=8 is -3/k<BR>\n" );
document.write( "-3/k = -5/2<BR>\n" );
document.write( "-5k = -6<BR>\n" );
document.write( "k = 6/5<BR>\n" );
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