Question

What is the domain of the given function? {(3, –2), (6, 1), (–1, 4), (5, 9), (–4, 0)}

Answer 1

domain is the inputs
range is outputs
(x,y)
x=input
y=output
just take the first numbers of every pair

D={3,6,-1,5,-4}
arrange it in order for fun or some reason
D={-4,-1,3,5,6}