Which of these relations is a function?
A. { (1, 1), (1, 2), (1, 3) }
B. { (1, 1), (2, 1), (3, 1) }
C. { (1, 1), (2, 2), (3, 3) }
D. Both B and C
Which of the following could NOT possibly be true for a function?
A. The domain is {2}, and the range is {2}.
B. The domain is {2, 3}, and the range is {2}.
C. The domain is {2}, and the range is {2, 3}.
D. The domain is {2, 3}, and the range is {2, 3}.
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