document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=279787>Question 279787</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose z varies directly as the square of x and inversely as y.  If z=8 when x=4 and y=6, find z when x=6 and y=12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203355 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=203355\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose z varies directly as the square of x and inversely as y. If z=8 when x=4 and y=6, find z when x=6 and y=12<BR>\n" );
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document.write( "z = kx^2/y<BR>\n" );
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document.write( "Solve for \"k\":<BR>\n" );
document.write( "8 = k*4^2/6<BR>\n" );
document.write( "48 = 16k<BR>\n" );
document.write( "k = 3<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "z = 3x^2/y<BR>\n" );
document.write( "find z when x=6 and y=12<BR>\n" );
document.write( "z = 3*6^2/12<BR>\n" );
document.write( "z = 3*3<BR>\n" );
document.write( "z = 9<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );