In the algebraic expression $$\frac{1}{2}xy - 3x + 4y - 7$$ ...

Question Analysis
This question tests the ability to identify a term that contains multiple variables in an algebraic expression.

Key Concept Explanation
A term can contain one or more variables, and the sign of the term is part of the term itself.

Step-by-step Solution
1. Examine the given expression:
2. Identify the term that contains both variables and