document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1128490>Question 1128490</A>: <I><SPAN STYLE=\"word-break: break-all;\"> So perpendicular lines have negative reciprocal slopes, but the 1st slope is (-1/4) so what would be the negative reciprocal? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744952 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13209)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=744952\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Saying that the slope of a perpendicular line is the \"negative reciprocal\" of the slope of the first line does NOT mean the slope is a negative number.  It means the slope of the perpendicular line is the reciprocal of the slope of the given line, MULTIPLIED BY NEGATIVE 1.<br><BR>\n" );
document.write( "If the slope of the first line is -1/4, then the reciprocal of that slope is -4/1, and the slope of the perpendicular line is -1(-4/1) = 4/1 = 4. </SPAN>\n" );
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