The probability that a student takes a history class and a sociology class is 0.051. the probability that a student takes a history class is 0.32. what is the probability that a student takes a sociology class

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? )