From a velocity graph, can you tell where the starting position is? Also, can you tell where the ending position is relative to the starting position? Explain.

Answer 1

No
Yes
Maybe you were in New York when you started at 5 m/s and maybe you were in Boston. The graphs would be the same, constant 5 m/s
You can however integrate the velocity to find the distance moved during the trip. x - x initial = integral of V dt