Here's the question you clicked on:
nunncm
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}
do you know what a domain is ?
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) ?
what about others ?? (1, 2), (−3, −4), (−3, 2)
for (1,2) what is x co-ordinate ?
idk how to do any of this that's why im asking..
|dw:1372849650433:dw| so now, what is x- co-ordinate of (1,2) ?
right! what about (-3,-4) ?
correct! lastly input value or x co-ordinate of (-3,-2) ?
we are very close to the answer! just collect all input values (x co-ordinates) and put it in a set, thats it!