Bluebook试题4 · 第 18 题

The rational function \(f\) is defined by an equation in the form \(f(x)=\frac{a}{x+b}\), where \(a\) and \(b\) are constants. The partial graph of \(y=f(x)\) is shown. If \(g(x)=f(x+4)\), which equation could define function \(g\)?