Question

The domain of the following relation: R: {(6, −2), (1, 2), (−3, −4), (−3, 2)} is

Answer 1

if you stack your points up vertically you can just read off the domain from the left sides

Answer 2

( 6 , −2),
( 1 , 2),
(−3, −4),
(−3, 2)}
^
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Domians

if anythings doubled just count it once