Jika grafik fungsi f(x) = (19)−x+14f\left(x\right)\ =\ \sqrt[4]{\left(\frac{1}{9}\right)^{-x+1}}f(x) = 4(91)−x+1 melalui titik (a, 9)\left(a,\ 9\right)(a, 9), tentukan nilai a!
1
-3
-5
3
5