The domain of the following relation: R: {(6, -2), (1, 2), (-3, -4), (-3, 2)} is

{-3, -3, 1, 6}

{-4, -2, 2, 2}

{-4, -2, 2}

{-3, 1, 6}

Can someone explain to me how to get the correct answer?

Question

The domain of the following relation: R: {(6, -2), (1, 2), (-3, -4), (-3, 2)} is

 {-3, -3, 1, 6}

 {-4, -2, 2, 2}

 {-4, -2, 2}

 {-3, 1, 6}

Can someone explain to me how to get the correct answer?

anonymous · Answer

Domain is x values.
We can see that the x values are 6,1, and -3

Your answer will be D: {-3,1,6}

anonymous · Answer

no repetition of elements.
so Kirbylegs is correct.