To determine if the sequence -11, -6, -1, 4, 9... is arithmetic, geometric, or neither, let's analyze it:
1.Arithmetic Sequence:
Calculate the differences between consecutive terms:
-6 - (-11) = 5
-1 - (-6) = 5
4 - (-1) = 5
9 - 4 = 5
The differences between consecutive terms are all 5, which is constant. Therefore, the sequence is arithmetic.
2.Geometric Sequence:
Calculate the ratios between consecutive terms: