Respuesta :
Answer:
Arithmetic.
Step-by-step explanation:
Geometric sequences have common ratios. Arithmetic sequences have common differences.
Answer:
Below.
Step-by-step explanation:
Try subtracting the terms to see if its arithmetic:
-5 - -9 = 4
-1 - -5 = 4
3 - -1 = 4
7 - 3 = 4
The common difference is 4 so its arithmetic.