document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=142364>Question 142364</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534463878/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> find the equation of the line perpendicular to the line x=4 and passing through the point (4,2). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109191 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=109191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the equation of the line perpendicular to the line x=4 and passing through the point (4,2).<BR>\n" );
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document.write( "Since it's perpendicular, it's parallel to the x-axis, or slope = 0.<BR>\n" );
document.write( "So, y-y1 = m(x-x1)<BR>\n" );
document.write( "y-2 = 0*(x-4)<BR>\n" );
document.write( "y-2 = 0<BR>\n" );
document.write( "y = 2<BR>\n" );
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document.write( "think about it. x=4 is a line 4 units from the y-axis and parallel to it. The eqn, perpendicular to it, has to be parallel to the x-axis. And it goes thru the point (4,2), so y = 2.  It's a line 2 units above the x-axis. </SPAN>\n" );
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