SOLUTION: Is 16, -8, 4, -2,... arithmetic?

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Question 1060357: Is 16, -8, 4, -2,... arithmetic?
Found 2 solutions by Fombitz, 0764229590:
Answer by Fombitz(32388) About Me  (Show Source):
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No, geometric.
Each successive term is (-1/2) multiplied by the previous term.

Answer by 0764229590(3) About Me  (Show Source):
You can put this solution on YOUR website!
No, it is not an arithmetic sequence since the difference between the consecutive terms is not common.
[ T2-T1 is not equal to T3-T2 ]