document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=536042>Question 536042</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write equation of a perpendicular line in slope intercept form if y=2/5x-4 (-1,2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #352109 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=352109\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write equation of a perpendicular line in slope intercept form if y=2/5x-4 (-1,2)<BR>\n" );
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document.write( "Slope of:<BR>\n" );
document.write( "y=2/5x-4<BR>\n" );
document.write( "is 2/5<BR>\n" );
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document.write( "A line perpendicular must have a slope that is the negative reciprocal:<BR>\n" );
document.write( "(2/5)m = -1<BR>\n" );
document.write( "m = -5/2 (this is the slope of the new line)<BR>\n" );
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document.write( "Plug slope (-5/2) and (1,2) into \"point-slope\" form:<BR>\n" );
document.write( "y - y1 = m(x - x1)<BR>\n" );
document.write( "y - 2 = (-5/2)(x - 1)<BR>\n" );
document.write( "y - 2 = (-5/2)x + 5/2<BR>\n" );
document.write( "y = (-5/2)x + 5/2 + 2<BR>\n" );
document.write( "y = (-5/2)x + 5/2 + 4/2<BR>\n" );
document.write( "y = (-5/2)x + 9/2  (this is what they're looking for)\r<BR>\n" );
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