Answered

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15. Which of the following relations defines y as a function of x?

15 Which Of The Following Relations Defines Y As A Function Of X class=

Sagot :

Remember that

The data set is a function if every element of the domain corresponds to exactly one element of the range

so

Verify each option

I ------> is a function (every element of the domain corresponds to exactly one element of the range)

II -----> is not a function (every element of the domain does not correspond to exactly one element of the range)

III ---> is a function (every element of the domain corresponds to exactly one element of the range)

IV ----> is not a function (every element of the domain does not correspond to exactly one element of the range)

therefore

The answer is

Both I and III define a y as function of x

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