In the context product relationship, a product line is a group of closely related products that are treated as a unit because of a similar marketing strategy. PR is to determine the optimum quantity of the variable input that will used in combination with fixed input in order to produce optimal level of output.
The principle are liable for the contracts of the agents and if only the agent was authorized by the principal to make a contract, which is expressed ie made in words, written
And is implied that is agents is given the rights and not in case of the personal claims made by the agent who is acting on the scope of authority.
