(a) Action to vacate, discontinue or abolish any highway, street, lane, alley or other public place, or part thereof, shall be by resolution. After the introduction of such resolution and before its final adoption, the Commission shall hold a public hearing thereon and shall publish notice of such hearing at least one week prior thereto.
(b) The following actions shall require the affirmative vote of five members of the Commission for the effectiveness thereof;
(1) Vacating, discontinuing or abolishing any highway, street, lane, alley or other public place or part thereof;
(2) Leasing, selling or disposing of any city-owned real estate or interest therein;
(3) Condemning private property for public use;
(4) Creating or abolishing any office;
(5) Appropriating any money;
(6) Imposing any tax or assessment;
(7) Reconsidering or rescinding any vote of the Commission.