To prove that the expressions \( y \cdot 3x \) and \( 3xy \) are equivalent using the Commutative Property, we can rearrange the factors in Expression 1:
- Start with Expression 1: \( y \cdot 3x \).
- Apply the Commutative Property: \( y \cdot 3x = 3 \cdot x \cdot y \).
- Rearranging gives us \( 3 \cdot y \cdot x \), which is the same as \( 3xy \).
Thus, both expressions are equivalent. This result demonstrates that the order in which we multiply numbers does not affect the product, confirming the Commutative Property of multiplication.