document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=755407>Question 755407</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I do not understand inverse and direct variation.<BR>\n" );
document.write( "How would i set this up?<BR>\n" );
document.write( "suppose z varies directly as x and inversly as the square of y. If x=5 and y=2, then z=40. find z when x=6 and y=4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #459642 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=459642\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> suppose z varies directly as x and inversly as the square of y. <BR>\n" );
document.write( "z = k*x/y^2<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Solve for \"k\" using \"If x=5 and y=2, then z=40\". <BR>\n" );
document.write( "40 = k*5/(2^2)<BR>\n" );
document.write( "160 = 5k<BR>\n" );
document.write( "k = 160/5<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "z = (160/5)x/y^2<BR>\n" );
document.write( "------------------------<BR>\n" );
document.write( "find z when x=6 and y=4<BR>\n" );
document.write( "z = (160/5)*6/16<BR>\n" );
document.write( "---<BR>\n" );
document.write( "z = 10*6/5<BR>\n" );
document.write( "z = 12<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================<BR>\n" );
document.write( "------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );