Question: 6. (4 points)Let ~ be a relation on N x N defined as follows: for all a,b,x,y N, (a,b) ~ (,y) @a-a@=b-y (a) Show that

6. (4 points)Let ~ be a relation on N x N defined as follows: for all a,b,x,y N, (a,b) ~ (,y) @a-a@=b-y (a) Show that ~ is an equivalence relation. (b) Give a list of the elements in the equivalence class of (1, 1)

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