Final answer:
The domain for a line depends on the context and can be any set of numbers or values that make sense within that context.
Step-by-step explanation:
The domain for a line refers to the set of all possible input values for the line. In this case, the given line numbers 1, 13, 14, 21, and 25 have no context provided, so it is unclear what the line represents.
Therefore, it is not possible to determine the precise domain without additional information.
However, in general, the domain of a line can be any set of numbers or values that make sense within the given context. For example, if the line represents a sequence of natural numbers, the domain would be the set of all natural numbers.
If the line represents temperatures in Fahrenheit, the domain could be the set of all possible temperature values in that scale.