Some one help me plez I would give medal

The domain of the following relation: R: {(3, -2), (1, 2), (-1, -4), (-1, 2)} is

{-1, 1, 3}

{-1, -1, 1, 3}

{-4, -2, 2, 2}

{-4, -2, 2}

Question

Some one help me plez I would give medal

The domain of the following relation: R: {(3, -2), (1, 2), (-1, -4), (-1, 2)} is

 {-1, 1, 3}

 {-1, -1, 1, 3}

 {-4, -2, 2, 2}

 {-4, -2, 2}

anonymous · Answer

The domain is the x values, which is the first number in each parenthesis.
All you have to do is make a list of the x values that are given in the relation.

Those are 3, 1,-1, and another -1

Does that make sense?

anonymous · Answer

This means that the answer is 

A) -1, 1, 3