The start of an arithmetic sequence is shown. What is the \( n^{\text {th }} \) term rule for the sequence?

Step 1 ：Identify the common difference: \(d\)

Step 2 ：Find the first term: \(a_1\)

Step 3 ：Calculate the \( n^{\text {th }} \) term rule: \( a_n = a_1 + (n-1)d \)