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State the domain of the following relation and state if it is a function.

(3, 2), (4, 1), (4, 5), (5, 1)


A.{3, 4, 5}; Yes

B.{1, 2, 5}; Yes

C.{3, 4, 5}; No

D.{1, 2, 5}; No

Verified Answer :

americasmiller

2, 1, and 5 are the domain. It's not a function though because there are two 4's in the first place. I would say the answer is D.

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