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Which table represents a function?

Which table represents a function?-example-1
Which table represents a function?-example-1
Which table represents a function?-example-2
Which table represents a function?-example-3
Which table represents a function?-example-4

1 Answer

7 votes

Answer:

Table A.

Explanation:

We know,

'A function is a mapping from domain to co-domain where for every member of the domain is mapped to a unique member of the co-domain'.

According to the options:

Table B: Here, we see that, -5 is mapped to both -5 and 5, which is not possible for a function.

Table C: Here, the -2 is mapped to 2 and 4. Thus, the image is not unique.

Table D: We see that, -4 is mapped to 2 and 0.

Thus, in each of the above options, 'not every element of the domain has unique image'.

So, the are all discarded.

Hence, option A is correct, in which every element is mapped to a unique element.

User Mahmood
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