Answer
This is not an arithmetic sequence.
Work Step by Step
The difference between consecutive terms is constant in an arithmetic sequence.
The sequence: -9, -17, -26, -33, ...
Finding the pattern:
Difference between 1st and 2nd term:
2nd term-1st term=Difference
-17-(-9)= -8
Difference between 2nd and 3rd term:
3rd term-2nd term=Difference
-26-(-17)=-9
Difference between 3rd and 4th term:
4th term-3rd term=Difference
-33-(-26)=-7
The common difference is not constant and thus this is not an arithmetic sequence.
