Answer:
[-8,4]
Step-by-step explanation:
you look at the x-axis. The end points of the graph are -8 and 4, thus the domain would be [-8,4] as it is always written in left to right or bottom to top value.
hope it helps.
speed = Distance ÷ time
S = 8km ÷ 0.5h
S = 16km/h
a = 4, b = 0
Also, a = 0 and b = 0 :)