Question

The table shown below represents a function. Which of the following values cannot be used to complete the table?

X Y
-10 5
-25 10
-5 15
__ 20

1. -20
2. -15
3. -5

Answer 1

3.-5 is correct

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.