Mathematics, 29.07.2020 01:01, jazz9876

Which of these relations are functions? {(-5,-7), (-2,-7), (7,17), (-5,21)} x 2 -2 6 2 -6 y 11 -5 21 15 -15 x 4 -4 7 -7 -4 y 3 -2 11 5 -5

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Which of these relations are functions? {(-5,-7), (-2,-7), (7,17), (-5,21)} x 2 -2 6 2 -6 y 11 -5 21...