Question

The domain of the following relation R {(3, −2), (1, 2), (−1, −4), (−1, 2)} is...


A. {−1, 1, 3}

B. {−1, −1, 1, 3}

C. {−4, −2, 2, 2}

D. {−4, −2, 2}

Answer 1

can you name the x-coordinate of every pair

Answer 2

that means can you name the first number in every pair

Answer 3

:/ Not very sure

Answer 4

here is a pair
(3,-2)
which number is first
and which number is second?

Answer 5

3 is X and -2 is Y?

Answer 6

yes

Answer 7

we want to list all of the x coordinates of every pair for the domain

Answer 8

so 3 is going to be in the domain

Answer 9

what about looking at the pair (1,2)?

Answer 10

1 would be the domain?

Answer 11

yes 1 is going to be in the domain

Answer 12

so far we have 1,3 are in the domain

Answer 13

what about (-1,-4)?

Answer 14

-1 would be the Domain so 1, 3 and -1 would be in the pot?

Answer 15

yes -1,1,3 are all going to be in the pot

Answer 16

xD Thank you btw medal :P

Answer 17

by the way there isn't a real difference from A and B
A is less redundant so I would go with A
because there is no reason to repeat an element twice

Answer 18

anyways you did great so you get a medal too

Answer 19

Thank's :D