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

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}

hero · Answer

Hint: The domain includes all of the x values of each given point.

anonymous · Answer

I dont get it ?

hero · Answer

You were given the points (3,-2), (1,2), (-1,-4) and (-1,2). If each of those are points, what the the x values of each point?

anonymous · Answer

Not sure ?

hero · Answer

So if you're given an (x,y) point, the first value represents x and the second value represents y, right?

anonymous · Answer

Oh yeah

anonymous · Answer

the X are3 , 1 , -1 and -1

hero · Answer

And those values do not have to be in that order to represent the domain of x.

hero · Answer

x = {3,1,-1,-1} means the same as x = {3,-1,1,-1} means the same as x = {-1,3,-1, 1} etc.

hero · Answer

So which of the answers above is correct?

hero · Answer

I'll give you a medal if you can tell me.

anonymous · Answer

The second one :)

anonymous · Answer

And for the range would it be the same just with Y ?