The table shown below represents a function. which of the following values could not be used to complete the table?

-20
-15
-5

C. -5

Step-by-step explanation:

We are given,

The table which represents a function.

Now, 'A function is a relation in which every element of the domain has a unique image'.

So, from the table, we see that,

-5 has the image 15.

So, it cannot have another image.

Thus, the number which cannot be used to complete the table is -5.

Hence, option C is correct.