Consider the function represented by 9x + 3y = 12 with x as the independent variable. how can this function be written using function notation?

f(x)= x+4

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? )