Which property of addition is shown below? If x = a + bi and y = –a – bi, x + y = 0.
commutative property
identity property
associative property
inverse property

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? )