1. The problem is to verify or understand the expression $x = \frac{y}{2}$. 2. This expression means that $x$ is half of $y$. 3. The formula used here is a simple division: $x = \frac{y}{2}$. 4. This implies that if you know the value of $y$, you can find $x$ by dividing $y$ by 2. 5. For example, if $y = 10$, then $x = \frac{10}{2} = 5$. 6. This is a direct proportional relationship where $x$ changes as half of $y$.