Let f = {(1,1), (2,3), (0,-1), (-1, -3)}...

Let f = {(1,1), (2,3), (0,-1), (-1, -3)} be a function from Z to Z defined by `f(x) = ax + b`, for some integers a, b. Determine a, b.

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The correct Answer is:

2 x - 1

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