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How many of the following are 1-1 functions:x + y = 1{(2, 1), (-2,3), (5,7), (2,3)}x = y + 1x = y + 1THREEALL FOURONENONETWO
How many of the following are 1-1 functions:x² + y² = 1{(2, 1), (-2,3), (5,7), (2,3)}x² = y + 1x = y² + 1THREEALL FOURONENONETWO
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