Question: 1. Let f be the function given by f(x) = 3x - 5. Use the contrapositive implication to prove: If x1 # X2, then f(x1)

1. Let f be the function given by f(x) = 3x

1. Let f be the function given by f(x) = 3x - 5. Use the contrapositive implication to prove: If x1 # X2, then f(x1) # f(x2). Prove that for every s O there exists a & > 0 such that

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