jika f(x)=3x-4 dan g(x0=3-4x tentukan (gof)-1(x) bantuin please

jawab

f(x)=  3x - 4
g(x) = 3 - 4x

gof(x) = g { f(x)}
= g (3x - 4)
= 3 - 4(3x - 4)
= 3 - 12x + 16
= 19 - 12x

y = 19 -12x
12x = 19    - y
x = (19 - y)/(12)

(gof)⁻¹ (x) =  (19 - x) /12