Is the given sequence arithmetic? Justify the answer

Question

0.2 , -0.6 , -1.4 , -2.2

Answer 1

An arithmetic sequence is a list of numbers with a definite pattern. If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence. The constant difference in all pairs of consecutive or successive numbers in a sequence is called the common difference, denoted by the letter d. -- Wikipedia

Each term is -0.8 distance from the previous term, so it is an Arithmetic sequence.

Answer 2

-0.6 - 0..2 = ?

-1.4 - (-0.6) = ?

-2.2 - (-1.4)= ?