Question

Which table lists $f(1)$ through $f(4)$?

$$\begin{aligned}f(1) &= 9 \ f(n) &= f(n-1) - 2 \ n &\geq 2\end{aligned}$$

Accepted Answer

$$\begin{array}{c|cccc}n & 1 & 2 & 3 & 4 \ \hline f(n) & 9 & 7 & 5 & 3\end{array}$$

Answer

$$\begin{array}{c|cccc}n & 1 & 2 & 3 & 4 \ \hline f(n) & 9 & 9 & 9 & 9\end{array}$$

Answer

$$\begin{array}{c|cccc}n & 1 & 2 & 3 & 4 \ \hline f(n) & 9 & 8 & 7 & 6\end{array}$$

Answer

$$\begin{array}{c|cccc}n & 1 & 2 & 3 & 4 \ \hline f(n) & 9 & 6 & 3 & 0\end{array}$$

Practice: Recurrence - Rule to Table