Let X = {1, 2, 3, 4, 5, 6, 7, 8, 9}. Let R1 be a relation on X given by R1

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Let X = {1, 2, 3, 4, 5, 6, 7, 8, 9}. Let R1 be a relation on X given by R1 = {(x, y) : x – y is divisible by 3} and R2 be another relation on X given by R2 = {(x, y) : |x, y|  {1, 4, 7} or {x, y}  {2, 5, 8} or {x, y}  {3, 6, 9}. Show that R1 = R2.
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