?

Algebra

Free Version

Upgrade subject to access all content

Easy

Common Difference of Consecutive Terms

ALGEBR-7SM4XF

The first term of an arithmetic sequence is $a_{1}=19$ and the seventh term is $a_{7}=1$.

What is the common difference of the sequence?

A

3

B

-18

C

18

D

-3

E

none of the above