Question

For each relation, decide whether or not it is a function.

Answer 1

Explanation:

The value of Domain should appear once.

Relation 1 is a function

Domain: t, j, v, s

Relation 2 is a function

Domain: -2, 4, 3 - 9, - 1

Relation 3 is not a function

Domain: 5, -2, -2, 5

Relation 4 is not a function

Domain: b, v, m, m