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anonymous

  • 4 years ago

Which of the following relations is a function? (0,4), (-3, 2), (8, 1), (-8, 2) (0,4), (-3, 6), (0, 3), (-8, 2) (8,1), (-3, 4), (0, 1), (8, 2) (0,0), (-3, 3), (8, 1), (-3, 5)

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  1. anonymous
    • 4 years ago
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    A function cannot have the same x value over its domain.

  2. amistre64
    • 4 years ago
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    ANY OF THem have duplicate x parts? pinky got excited on that one

  3. anonymous
    • 4 years ago
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    i need the answer

  4. amistre64
    • 4 years ago
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    needing the answer is one thing; finding the answer is another

  5. anonymous
    • 4 years ago
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    it's wrong

  6. amistre64
    • 4 years ago
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    having the same x value is allowed as long as it retains the same y value each time :)

  7. anonymous
    • 4 years ago
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    no no first one is the answer

  8. amistre64
    • 4 years ago
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    first one might not be the answer on the next one tho, so we really need a better way to determine these things :)

  9. anonymous
    • 4 years ago
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    the first one is a function. The others are not because if you fix an x-value, you get more than one y value associated with it. In the second, x=0 has 3 and 4 associated with it. In the third, x=8 has 1 and 2 associated with it. In the the fourth, x=-3 has 3 and 5 associated with it. A function is a relation where one x value has a unique y-value associated with it. Note you can have two x-values associated with one y-value, like in f(x) = x^2

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