Question

What are the domain and range of the relation {(–9, 5), (1, 5), (6, 11), (7, –10)}?

Answer 1

So these are ordered pairs
(x,y)
x=input
y=output

x=domain
y=range

so the domain is all the first numbers
range is all the second numbers

so (-9,5), (1,5), (6,11), (7,-10)
doman={-9,1,6,7}
range={5,11,-10} (since the 5 repeats we don't need to rite it again

answer is B