Question 1201775
k, the variation constant


-------------------------
z varies inversely as w
-------------------------


{{{z=k/w}}}




---------------------------------
z=20 when w=0.2
---------------------------------


{{{zw=k}}}

{{{k=zw}}}

{{{k=(20)(0.2)}}}

{{{k=4}}}


Formula is therefore {{{highlight(z=4/w)}}}.