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10 September, 16:36

Which relation describes a function?

{ (0,0), (0, 2), (2.0), (2, 2) }

{ (-2, - 3), (-3, - 2), (2,3), (3, 2) }

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

{ (2, 2), (2, 3), (3, 2), (3, 3) }

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Answers (2)
  1. 10 September, 19:24
    0
    The function is b) { (-2,-3), (-3,-2), (2,3), (3,2) }
  2. 10 September, 19:31
    0
    { (-2, - 3), (-3, - 2), (2,3), (3, 2) }

    Step-by-step explanation:

    A function is a set of ordered pairs in which no two pairs have the same first number.

    In other words, an x cannot be paired with two y's.

    A function takes an x and pairs it with one and only one y.

    { (0,0), (0, 2), (2.0), (2, 2) } is not a function because it pairs 0 with both 0 and 2.

    { (2,-1), (2, 1), (3,-1), (3, 1) } is not a function because it pairs 2 with both - 1 and 1.

    { (2, 2), (2, 3), (3, 2), (3, 3) } is not a function because it pairs 2 with both 2 and 3.
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