melisaan1achristiny
Answered

Determine which relation is a function.


A.{(–4, 3), (–2, 3), (–1, 2), (2, 5), (3, 2)}


B.{(–4, 1), (–2, 3), (–2, 1), (–1, 5), (3, 2)}


C.{(–4, 1), (–2, 3), (–1, 2), (3, 5), (3, 2)}


D.{(–4, 1), (–2, 3), (–1, 1), (–1, 5), (3, 2)}

Verified Answer :

Edufirst

The A is a function, because all the values of the independent variable (the first value of the ordered pairs) are related to only one value, i.e. have only one image.

In B - 2 has two different images: 3 and 1. That makes that this is not a function.

In C, 3 has two different images: 5 and 2. That makes that this is not a function.

In D, - 1 has two different images: 1 and 5. That makes that this is not a function.

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