F(x) = ¼x - ½ Tolong dicari pake Fungsi Invers

[tex]f(x) = \frac{1}{4} x - \frac{1}{2} \\ y = \frac{1}{4} x - \frac{1}{2} \\ y + \frac{1}{2} = \frac{1}{4} x \\ 4y + 2 = x \\ {f}^{ - 1} (x) = 4x + 2[/tex]