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Let y = 2( x - 4) 2 - 8. Part A : Is the given relation a function? Is it one-to-one? Explain completely. If

Let y = 2(x - 4)2 - 8. Part A: Is the given relation a function? Is it one-to-one? Explain completely. If it is not one-to-one, determine a possible restriction on the domain such that the relation is one-to-one. Part B: Determine y-1. Show all necessary calculations. Part C: Prove algebraically that y and y-1 are inverse functions.

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