document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=416130>Question 416130</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that y varies jointly with w and x and inversely with z, and y = 360 when w = 8, x = 25, and z = 5. Write the equation that models the relationship. Then find ywhen w = 4, x = 4, and z = 3. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #291655 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=291655\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that y varies jointly with w and x and inversely with z,<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28wx%29%2Fz ALIGN=MIDDLE  ALT=\"%28wx%29%2Fz\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "and y = 360 when w = 8, x = 25, and z = 5.<BR>\n" );
document.write( "write it as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28wxk%29%2Fz ALIGN=MIDDLE  ALT=\"%28wxk%29%2Fz\"   DISABLED_style= \"max-width:90%; height:auto;\" > = y<BR>\n" );
document.write( "Find the constant of variation (k) using these values<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%288%2A25%2Ak%29%2F5 ALIGN=MIDDLE  ALT=\"%288%2A25%2Ak%29%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 360<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28200k%29%2F5 ALIGN=MIDDLE  ALT=\"%28200k%29%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 360<BR>\n" );
document.write( "40k = 360<BR>\n" );
document.write( "k = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2F360 ALIGN=MIDDLE  ALT=\"40%2F360\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "k ~ .11<BR>\n" );
document.write( ":<BR>\n" );
document.write( " Write the equation that models the relationship.<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.11wx%29%2Fz ALIGN=MIDDLE  ALT=\"%28.11wx%29%2Fz\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( " Then find y when w = 4, x = 4, and z = 3.<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.11%2A4%2A4%29%2F3 ALIGN=MIDDLE  ALT=\"%28.11%2A4%2A4%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.78%2F3 ALIGN=MIDDLE  ALT=\"1.78%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "y ~ .5926 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );