Which of these equations represent functions? Check all that apply.
Ay = (x - 2)^2 + 5
Bx^2 - 4y^2 = 1
Cy = 3x - 3
Dy = 4x^5
Ay = (x - 2)^2 + 5
Bx^2 - 4y^2 = 1
Cy = 3x - 3
Dy = 4x^5