document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1106602>Question 1106602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> `Line line 1, passes through points P(n, 4) and Q(1 2), Line 2, passes through points R(4, 3) and S (1, 5). a) What is the value of n if the lines are parallel? b) If the lines are perpendicular, what is the value of n?''. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #721604 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=721604\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> duplicate\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Most of the work is shown in previous post\r<BR>\n" );
document.write( "\n" );
document.write( "See  https://www.algebra.com/algebra/homework/coordinate/Linear-systems.faq.question.1106594.html\r<BR>\n" );
document.write( "\n" );
document.write( "(used point labels for lines there)\r<BR>\n" );
document.write( "\n" );
document.write( "-\r<BR>\n" );
document.write( "\n" );
document.write( "You should at first find that slope for PQ is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2%2F%281-n%29 ALIGN=MIDDLE  ALT=\"-2%2F%281-n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and slope for RS is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2%2F3 ALIGN=MIDDLE  ALT=\"-2%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
document.write( "\n" );
document.write( "... </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );