Question

Determine if the sequence below is arithmetic or geometric and determine the

common difference / ratio in simplest form.
14, 10, 6, ...

Answer 1

Explanation:

Each term in the sequence is 4 less than the previous term. That indicates an arithmetic sequence, which has the form a(n) = a(1) + d(n -1), where d is the common difference. Here the common difference is -4, and so the appropriate sequence is

a(n) = 14 - 4(n - 1)