tolong bantu no3 dong

Fungsi Invers

f(x) =(2x + 7) / (x - 3)
y = (2x + 7) / (x - 3)
y(x - 3) = 2x + 7
xy - 3y = 2x + 7
xy - 2x = 3y + 7
x(y - 2) = 3y + 7
x = (3y + 7) / (y - 2)

f^-1(x) = (3x +7) / (x - 2)