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20 October, 17:32

Which relation is a function?

O {{7, 12), (1, - 5), (3, - 10), (2, - 5) }

O { (-3, 4), (-2, 5), (0, 9), (0, 12) }

{ (1, 2), (1, 5), (1, - 1), (1, 4) }

{ (8, - 1), (2, - 1), (3, 8), (2,5}

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Answers (2)
  1. 20 October, 17:45
    0
    The first one: {{7, 12), (1, - 5), (3, - 10), (2, - 5) }

    Step-by-step explanation:

    Functions can't have repeating x values. Each x has to have its own y value.
  2. 20 October, 20:50
    0
    The first one because X does not repeat
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