If $y$ varies directly as $x$ and inversely as $z$, then we have
\begin{equation*}
y=\frac{kx}{z},
\end{equation*}
where $k$ is a non-zero constant.
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
If $y$ varies directly as $x$ and inversely as $z$, then we have
\begin{equation*}
y=\frac{kx}{z},
\end{equation*}
where $k$ is a non-zero constant.
