What is the distance between (–2 and one-half, –3) and (1, –3)? –3 and one-half units –1 and one-half units 1 and one-half units 3 and one-half units

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began