To prove that the expressions \( y \times 3x \) and \( 3xy \) are equivalent using the Commutative Property, we follow these steps:
- Start with the expression \( y \times 3x \).
- By the Commutative Property of multiplication, we can rearrange the factors: \( y \times 3x = 3 \times y \times x \).
- By further applying the Commutative Property, we can write this as \( 3 \times x \times y = 3xy \).
Thus, \( y \times 3x = 3xy \).
The equivalence of the two expressions is established through the Commutative Property, which allows us to rearrange the order of multiplication without changing the product.