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}

myininaya · Answer

Just all the x's (don't repeat any x's in the set though)

anonymous · Answer

MADROCKZ YOU SURE

myininaya · Answer

It would be better @madrockz if they can come to a conclusion on their own.

myininaya · Answer

(x,y)
The first value of each of those pairs is the x-coordinate.
Now just tell me what all the x values are (but just make sure you have no repetitions) @kstate

anonymous · Answer

i m sure...first one is the correct answer.bcoz in a set like(x,y),(a,b)(c,d)....x,a,c are the elemtents of domain while y,b,d are elements of range.and id some digit occurs twice then it is taken once only...like here -1 occured twice but we will write -1 only once not twice