Tanya is practicing for her next track and field meet She and her coach have been collecting data abou her athletic performance and want to know what Tanya's rate of speed is if she can run a 90 meter course in 15 seconds.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )