The authors consider the nonhomegenous linear impulsive dynamic system
where are real matrices, is a matrix-valued, real, rd-continuous, regressive function, is a vector real function, and is a vector real sequence. The points of impulses are assumed to be right-dense. The existence and uniqueness of solutions to the initial value problems involving homogeneous as well as nonhomogeneous system are discussed. Properties of the associated transition matrix are established. The authors also give some sufficient conditions for the stablility of the system.