What is the recursive rule for the sequence?

Question

1.2, 0.4, −0.4, −1.2, −2, …

PLEASE HELP! FOR A TEST!

Answer 1

This is arithmetic sequence with a₁ = 1.2 and common difference d = 0.4 - 1.2 = - 0.8.

So recursiv rool for this sequence: a₁ = 1.2, a_{n + 1} = a_n - 0.8, n ≥ 1