Since the amount of water is directly proportional to the number of cups of rice, we can express the relationship as \( W = k \cdot R \), where \( W \) is the amount of water, \( R \) is the number of cups of rice, and \( k \) is the proportionality constant.
The coordinate \((\frac{1}{2}, 1)\) indicates that for \(\frac{1}{2}\) cup of rice, we need \(1\) unit of water. We can use this point to find the proportionality constant \( k \):
\[ 1 = k \cdot \frac{1}{2} \]
To solve for \( k \):
\[ k = 1 \div \frac{1}{2} = 2 \]
Now we have the equation of the proportional relationship:
\[ W = 2R \]
To find another point on the graph, we can choose any value for \( R \) and calculate \( W \).
Let's choose \( R = 1 \) (1 cup of rice):
\[ W = 2 \cdot 1 = 2 \]
So another point on the graph is \((1, 2)\), which corresponds to 1 cup of rice needing 2 units of water.