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}

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}

hartnn · Answer

do you know what a domain is ?

anonymous · Answer

noo

hartnn · Answer

a domain is just a set of input values! (or x co-ordinates)
like input value of (10,20) is just 10

so, what is input value of (6,-2) ?

anonymous · Answer

umm 6? aha

hartnn · Answer

correct!

hartnn · Answer

what about others ??
(1, 2), (−3, −4), (−3, 2)

anonymous · Answer

um ugh idkk

hartnn · Answer

for (1,2) what is x co-ordinate ?

anonymous · Answer

idk how to do any of this that's why im asking..

hartnn · Answer

|dw:1372849650433:dw|
so now, what is x- co-ordinate of (1,2) ?