Question

Decide whether the relation is a function or not.
{(-3, 5), (-2, 5), (0, 5), (1, 5), (2, 5)}

Answer 1

Yes — it is a function. Each input (-3, -2, 0, 1, 2) is paired with exactly one output (5), so no input maps to more than one value. It's a constant function (f(x) = 5 on the given domain).