Respuesta :
Answer and step-by-step explanation:
starting at ground level means the helicopter starts at the bottom, works its way up to a cruse, then drops to ground level then goes to the top of a building meaning it would look up-and-down like
this graph should be the one you're looking for
hope this helps:)

Starting from ground level means the helicopter takes off from the bottom climbs to a cruse, then descends to ground level before counting up and down.