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2 answers:
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Answer:
is not a function
Step-by-step explanation:
Given
Required
Which is not a function
A function is of the form
Assume a function is:
In simple terms:
For an ordered pair to be regarded as a function, no x value must be repeated
Analyzing the options:
1.
This is a function because none of the x values (-3, 8, 0 and -9) appeared more than once
2.
This is a function because none of the x values (5, -3, 0 and -9) appeared more than once
3.
This is a function because none of the x values (9, -5, 5 and 6) appeared more than once
4.
This is not a function because one of the x values (2) appeared more than once.
i.e.
and