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1. Let T = {(1, 2), (1, 3), (2, 5), (3, 6), (4, 7)}. T :...

1. Let T = {(1, 2), (1, 3), (2, 5), (3, 6), (4, 7)}. T : X -> Y. X = {1, 2, 3, 4}, Y = {1, 2, 3, 4, 5, 6, 7}

a) Explain why T is or is not a function.

b) What is the domain of T?

c) What is the range of T?

d) Explain why T is or is not one-to one?

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