tolong jawab guys no 7 menggunakan caranya guys

f(x) = (3x - 2)/(x - 1)
y = (3x - 2)/(x - 1)
y(x - 1) = 3x - 2
yx - y = 3x - 2
yx - 3x = y - 2
x(y - 3) = y - 2
x = (y - 2)/(y - 3)

f^-1(y) = (y - 2)/(y - 3)

f^-1(x) = (x - 2)/(x - 3)