document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286444>Question 286444</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For what value of k will the pair of equations 3x+4y=12 and kx+12y=30 not have a unique solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207747 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=207747\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There is no unique solution when they are parallel or the same line.<BR>\n" );
document.write( "Parallel there is no solution.<BR>\n" );
document.write( "Same line they share all solutions<BR>\n" );
document.write( "In either case they need the same slope.<BR>\n" );
document.write( "If k =9 then they have the same slope<BR>\n" );
document.write( "-a/b=-3/4<BR>\n" );
document.write( "-a/b=-9/12=-3/4<BR>\n" );
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