Algebra-2

Question Analysis
This question tests the student's ability to determine the domain of a relation given in the form of a mapping diagram. The domain is the set of all input values (x-coordinates) in the mapping diagram.

Key Concept Explanation
The domain of a relation is the set of all input values (x-coordinates) in the mapping diagram. It is essential to list these values without repetition and in a specific order (usually from smallest to largest).

Step-by-step Solution
1. Identify the input values in the mapping diagram: .
2. List these values in a set:

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