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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, x, y ∈ A}. Write down its domain, co-domain and range.

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Given R = {(x, y): 3x -y = 0, x, y ∈ A}

= {(1, 3), (2, 6), (3, 9), (4,12)}

Domain = {1, 2, 3, 4}

Co-domain = A Range = {3, 6, 9,12}

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