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# Let A = {1, 2, 3, … , 14}. Define a relation R from A to A by R = {(x, y): 3x – y = 0, where x, y $\in$ A}. Write down its domain, codomain and range.

Domain of R = {1, 2, 3, 4}, Codomain of R = A = {1, 2, 3, …, 14}, Range of R = {3, 6, 9, 12}