Question

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

9, –1, –11, –21, …

Answer 1

It starts off with -8 being added and then keeps on going down to -9, then to -10 so the next number in this pattern would be -32.

Answer 2

the common difference is -10.

Explanation:

When starting with 9, subtracting -10 from each of these numbers makes sense.