The recursive formula for the arithmetic sequence is given as follows:
<h3>What is an arithmetic sequence?</h3>
In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.
The nth term of an arithmetic sequence is given by:

In which
is the first term.
The recursive formula for the sequence is given by:

In the sequence 8, -5, -18, -31,...8,−5,−18,−31, the first term and the common ratio are given as follows:

Hence, the recursive sequence is given by:
More can be learned about arithmetic sequences at brainly.com/question/6561461
#SPJ1