Westonci.ca is the Q&A platform that connects you with experts who provide accurate and detailed answers. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

Let S be a nonempty subset of Z and let R be a relation defined on S by x R y if 3 (x + 2y). (a) Prove that R is an equivalence relation. (b) If S = (-7, -6, -2,0,1,4,5,7), then what are the distinct equivalence classes in this case?