Question

What is the common difference between successive terms in the sequence?

9, 2.5, –4, –10.5, –17, ...

Answer 1

-6.5

Explanation:

i got the answer correct on the quiz :)

Answer 2

common difference (d) = 2.5 - 9 = -6.5

= -4-2.5 = - 6.5

answer is -6.5