Question

Which best describes the relationship between the successive terms in the sequence shown?

9, –1, –11, –21, …

The common difference is –10. 

The common difference is 10. 

The common ratio is –9.

The common ratio is 9.

Answer 1

A

Explanation:

Answer 2

The common difference would be -10.

Step-by-step explanation: If it were +10 then it would be: 9, 19, 29, 39

If it had a common ratio of -9 then it would be: 9, -81, 729, -6561

It it had a common ratio of 9, then it would be: 9, 81, 729, 6561