Answer
$\log_3{x}-\log_3{y}$
Work Step by Step
Recall:
Quotient Property of Logarithms:
$$\log_a{b}-\log_a{c}=\log_a{\frac{b}{c}}$$
Use the Quotient Property to obtain:
\begin{align*}
\log_3{\frac{x}{y}}&=\log_3{x}-\log_3{y}
\end{align*}