Question

Determine whether the sequence is arithmetic or geometric. Sequence 1: –10, 20, – 40, 80, ... Sequence 2: 15, – 5, – 25, – 45, ... Which of the following statements are true regarding Sequence 1 and Sequence 2.

Answer 1

Sequence one is geometric since you are multiplying each number by a certain value (-2). Sequence 2 is arithmetic since you are adding each number by -20

Answer 2

Sequence 1 is geometric and sequence 2 is arithmetic