(a) Except as provided in subsection (b) of this Code section, every member is an agent of the limited liability company for the purpose of its business and affairs, and the act of any member, including, but not limited to, the execution in the name of the limited liability company of any instrument for apparently carrying on in the usual way the business and affairs of the limited liability company of which he or she is a member, binds the limited liability company, unless the member so acting has, in fact, no authority to act for the limited liability company in the particular matter, and the person with whom he or she is dealing has knowledge of the fact that the member has no such authority.

(b) If the articles of organization provide that management of the limited liability company is vested in a manager or managers:

(1) No member, acting solely in the capacity as a member, is an agent of the limited liability company; and

(2) Every manager is an agent of the limited liability company for the purpose of its business and affairs, and the act of any manager, including, but not limited to, the execution in the name of the limited liability company of any instrument for apparently carrying on in the usual way the business and affairs of the limited liability company of which he or she is a manager, binds the limited liability company, unless the manager so acting has, in fact, no authority to act for the limited liability company in the particular matter, and the person with whom he or she is dealing has knowledge of the fact that the manager has no such authority.

(c) An act of a manager or a member that is not apparently for the carrying on in the usual way the business or affairs of the limited liability company does not bind the limited liability company unless authorized in accordance with a written operating agreement at the time of the transaction or at any other time.

(d) No act of a manager or member in contravention of a restriction on authority shall bind the limited liability company to persons having knowledge of the restriction.