Asked by Leaaf

Determine if the given relation is function or not. Give its domain and range.


16. (-1, 2), (1, 3), (-1, 4), (2, 5)

17. (1, 1), (2, 2), (3, 3), (4, 4)

Answered by Steve
domain is set of all 1st numbers
range is the set of all 2nd numbers

function iff each 1st number maps to a unique 2nd number.

So, what do you get?
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