1. The problem is to determine if a given relation is a function. 2. A function is a relation where each input (x-value) corresponds to exactly one output (y-value). 3. To check if a relation is a function, verify that no x-value is paired with more than one y-value. 4. If any x-value repeats with different y-values, the relation is not a function. 5. Without a specific relation provided, this is the general rule to decide if a relation is a function.