document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112997>Question 1112997</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that y varies directly with x and inversely with z, and y = 25 when x = 35 and z = 7. Write the equation that models the relationship. Then find y when x = 12 and z = 4.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #728035 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=728035\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that y varies directly with x and inversely with z, and y = 25 when x = 35 and z = 7. Write the equation that models the relationship. Then find y when x = 12 and z = 4.<BR>\n" );
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document.write( "y = k*x/z<BR>\n" );
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document.write( "Solve for \"k\"::<BR>\n" );
document.write( "25 = k*35/7<BR>\n" );
document.write( "25 = k*5<BR>\n" );
document.write( "k = 5<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "y = 5*x/z<BR>\n" );
document.write( "Find y when x = 12 and z = 4<BR>\n" );
document.write( "y = 5*12/4<BR>\n" );
document.write( "y = 15<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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