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valentinak56 [21]
3 years ago
11

Which relation is a function of x?

Mathematics
2 answers:
natka813 [3]3 years ago
8 0

Answer:

last option is correct.

Step-by-step explanation:

A relation is a function if each x value has a unique y value.

We'll use this concept to check whether the relation is a function or not.

For the first relation,

the x value 2 has two different values -9 and 8 . Hence, it is not a function.

For the second relation,

the x values -8 and 1 has different y values . Hence, it is not a function.

For the third relation

The x value -5 has different y values. Hence, it is not a function.

For the fourth relation

All the x values have unique y values. Hence, from the definition it is a function.

Therefore, last option is correct.

Yuliya22 [10]3 years ago
4 0
The correct awnset to that question would be D
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