F(x) = 4x-6 g(x) = x+3 ditanya (fog)^-1 (x)

Fog = (4x+6) + 3 = 4x + 9
fog^-1 = 4x+9
y = 4x +9
4x = 9-y
x = 9-y /4
f(y)^-1 = 9-y /4
f(x)^-1 = 9-x /4