document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=363820>Question 363820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sorry heres another one..I got trouble with coordinates.\r<BR>\n" );
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document.write( "1. The Three points P(-2,3),Q(1,q) and R(7,0) are collinear.<BR>\n" );
document.write( "   a)Find the value of q<BR>\n" );
document.write( "   b) Find the ratio of lengths PQ: QR </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #259460 by </B><A HREF=/tutors/aboutme.mpl?userid=Jk22><B>Jk22(389)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Jk22><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=Jk22><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=259460\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(-2,3),Q(1,q) and R(7,0) collinear if PQ proportional to PR (other possibilities exist) : <BR>\n" );
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document.write( "PQ = (1-(-2), q-3) = (3, q-3) PR = (9, -3)<BR>\n" );
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document.write( "we have : PR shall be 3 * PQ (with the x component), hence the y component of PQ has to be : -3/3 = -1, hence q = 2\r<BR>\n" );
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document.write( "QR = (6, -2)\r<BR>\n" );
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document.write( "PQ/QR is hence 3/6 = 1/2<BR>\n" );
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