what is the domain of the relation {(1,4),(2,5),(3,6),(2,2),(1,1)}?

Question

A. {1,2,3}
B. {1,2,3,4,5,6}
C. All whole numbers except 0
D. All real numbers between 1 and 6 inclusive

Answer 1

domain is your choice or availability of x's

what x's do you see ?

Answer 2

I'm pretty sure it's A?

Answer 3

right!