Is {(5, –4), (3, –4), (–5, 3), (–4, 5)} a function?

Answer 1

No, because for the same value y = -4, there are 2 values of x: 5 and 3

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Answer 2
Yes it is a function. The requirement is that there are not two pairs with the same #x# and different #y#.
This set has no two pairs with the same #x#, so (obviously) it has no two pairs with the same #x# and different #y#.
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Answer 3

Yes, the set {(5, –4), (3, –4), (–5, 3), (–4, 5)} is a function because each input (x-value) is paired with exactly one output (y-value). There are no repeated x-values with different y-values.

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Answer 4

Yes, the set {(5, –4), (3, –4), (–5, 3), (–4, 5)} is a function because each input (x-value) is associated with exactly one output (y-value).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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