Question

Determine whether the sequence is arithmetic. If so, find the common difference.

-10, -3, 4, 11...
2, 6, 9, 13...
-4, -1, 2, 5...

Answer 1

Explanation:

The difference for the first one is 7 since -10+7=-3, and -3+7=4, and so on...

I am unsure about the second one since I am getting +4 and +3.

The difference for the third one is 3 since -4+3=-1, -1+3=2, and so on...