document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200253>Question 1200253</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the value of K so that the two lines are perpendicular. Line one contains the points (-6,4) and (-2,5) and line two contains the points (-3,4) and (0,k).\r<BR>\n" );
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document.write( "I know I need to do y2-y1/x2-x1 so I did that for both of them and got (1/4) for the first line and (k-4/3) for the second line. \r<BR>\n" );
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document.write( "Here is where I need help because I don't know what to do next. Any and all help is greatly appreciated :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #834336 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=834336\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Perpendicular lines have negative reciprocal slopes. You have correctly determined<BR>\n" );
document.write( "that the slope of the line through (-6,4) and (-2,5) is 1/4. Thus, the line<BR>\n" );
document.write( "through the points (-3,4) and (0,k) has a slope of -4.<BR>\n" );
document.write( "-4 = (k-4)/(0-(-3)) -> (k-4)/3 = -4 -> k-4 = -12 -> k = -8. </SPAN>\n" );
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