parris74 parris74 21-10-2021 Mathematics contestada Which equations are in standard form? Check all that apply y = 2x + 5 2x + 3y = -6 o 4x+3y = 12 Oy=x-9 = Olx 3 = 6 0 *x+3 = 6 2 3 O x-y = 5 5x + 3y = 1