Question

to find any term in an arithmetic sequence, one must know the first term, a₁, and the .

Explanation:

In an arithmetic sequence, the formula for the nth term is \(a_n = a_1+(n - 1)d\), where \(a_1\) is the first term, \(n\) is the term number, and \(d\) is the common difference. So to find any term, we need the first term and the common difference (the constant difference between consecutive terms).

Answer:

common difference