diketahui fungsi f(x) =½x+5,maka nilai f(x).........

maaf klo slah
[tex]f(x) = \frac{1}{2} x + 5 \\ y \: = \frac{1}{2} x + 5 \\ 2y \: = 1x + 5 \\ \frac{2y - 5}{1} = x \\ {f}^{ - 1} (y) = \frac{2y - 5}{1} \\ {f}^{ - 1} (x) = \frac{2x - 5}{1} [/tex]