Answer:
Correct choice is D). -4.
Explanation:
Given the following relation is a function where the relation is :
{(6,3),(-4,1),(8,-5),(x,1)}
Now we need to decide about which of the following cannot be a value for x.
Where given choices are:
A). 3
B). 1
C). -5
D). -4
E). 4
We know that a relation is called function if doesn't contains repeated values in domain or doesn't have repeated x-values.
In given relation, {(6,3),(-4,1),(8,-5),(x,1)}, we see that x-values are 6, -4 and 8.
So to prevent repetition, x can't be any of 6, -4 and 8.
Hence correct choice is D). -4.