Fungsi invers dari f(x)=4x-2 per x+5

Kelas 10 Matematika
Bab Fungsi Komposisi

g(x) = (ax + b)/(cx + d)
g⁻¹ (x) = (-dx + b)/(cx - a)

f(x) = (4x - 2)/(x + 5)
f⁻¹ (x) = (-5x - 2)/(x - 4)
f⁻¹ (x) = (5x + 2)/(4 - x)