1. State the problem: Evaluate the expression $x \cdot y$ for $x=3$ and $y=9$. 2. Write the original expression: $$x \cdot y$$ 3. Substitute the value of $x=3$ into the expression: $$3 \cdot y$$ 4. Substitute the value of $y=9$ into the expression: $$3 \cdot 9$$ 5. Multiply the numbers: $$3 \cdot 9 = 27$$ 6. Final answer: $$27$$ This shows step-by-step how to evaluate the product by substituting values and then multiplying.