Question

If the relation is a function, list the domain and range. If the relation is not a function, choose "not a function".

C = {(9, 1) (8, -3) (7, 5) (-5, 3)}

Domain: {9, 8, 7, -5} Range: {1, -3, 5, 3}
Domain: {1, -3, 5, 3} Range: {9, 8, 7, -5} not a function

Answer 1

Domain: {9, 8, 7, -5} Range: {1, -3, 5, 3}

Explanation:

The domain is the list of first numbers in the ordered pairs. If any of those are repeated, the relation is not a function.

The range is the list of second numbers in the ordered pairs.

The domain and range of C are shown above.