Answer:
D is the answer
Step-by-step explanation:
for function a
Domain {0, 1, 2, 3, 4}
Range {-4, -1, 2, 5, 8}
So the Domain is alreal numbers
for function B
y=7 is a straight line with zero slope and y-intercept 7 as shown below. Hence its domain (all allowed x-values) is all real numbers, and its range (all allowed y-values) is only 7
So both function A and B have all real numbers as their Domain
