Question

Select the relations that are functions.

Answer 1

Answer:

• {(a, 1), (b, 1), (C, 1)}
• {(1, -a), (2, a), (3, a)}
• {(a, a), (b, b), (C, c)}

Step-by-step explanation:

Any relation with distinct inputs is a function. If inputs are repeated, the relation is not a function.

Answer 2

answer

{(a, 1), (b, 1), (C, 1)}

{(1, -a), (2, a), (3, a)}

{(a, a), (b, b), (C, c)}