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Is R = {(x, y) : y = x + 1} from {1,...,6} to itself a function?
AYes, each element has one output
BYes, because its range equals A
CNo, because 1 has two outputs
DNo, because 6 has no output
Answer & Solution
Correct answer: D. No, because 6 has no output
The element 6 would need image 7, which is not in A, so 6 has no image.
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