Question

Which numbers belong to the domain of the relation {(8, –5), (4, 2), (4, 8), (–7, 6)}?

Answer 1

A. 4
B. 2
C. –5
D. –7

Answer 2

The domain is the input, it's the x value. The range is the output, it's the y value.
So in this case, the domain(x) is {8,4,-7}
However, in the domain if there are two numbers the same, just write the number once not twice.
Do you have to pick to answers for this question?
If so, the answers are A and D.