f(x)=ax+b olarak düşün.
$2x+3 \to x-2 \\ 2x \to x-5 \\ x \to \frac{x-5}2 \\ f(2\frac{x-5}2+3)=8\frac{x-5}2 +1 \\ f(x-2)=4x-19$