Answer:
(3,11), (-2,15), (7,11), (9,6)
Step-by-step explanation:
For a relation to represent a function, each input (x-value) must correspond to only one output. Let's analyze each relation:
1. (12,10), (3,6), (5,9), (3,18) - This is not a function because the input 3 has two different outputs 6 and 18.
2. (-4,7), (6,8), (4,5), (-4,8) - This is not a function because the input -4 has two different outputs 7 and 8.
3. (3,11), (-2,15), (7,11), (9,6) - This is a function. Each input corresponds to a unique output.
4. (1,5), (8,15), (6,12), (6,10) - This is not a function because the input 6 has two different outputs 12 and 10.
So, the relation (3,11), (-2,15), (7,11), (9,6) is the only one that represents a function.
