document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=956755>Question 956755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write a function that models each variation:<BR>\n" );
document.write( "a. x=-1 when y=5, y varies inversely as x.<BR>\n" );
document.write( "b.x=3 and y=12 when z=2, z varies directly with y and inversely with x. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #584532 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=584532\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write a function that models each variation:<BR>\n" );
document.write( " a. x=-1 when y=5, y varies inversely as x.<BR>\n" );
document.write( "y = k/x<BR>\n" );
document.write( "5 = k/-1<BR>\n" );
document.write( "k = -5<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "y = -5/x<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( " b.x=3 and y=12 when z=2, z varies directly with y and inversely with x.<BR>\n" );
document.write( "z = k*y/x<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "2 = k*12/3<BR>\n" );
document.write( "2 = 4k<BR>\n" );
document.write( "k = 1/2<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "y = (1/2)y/x<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );