Determine whether the sequence is arithmetic. If so, find the common difference. $- 3 , - 7 , - 11 , - 15 , - 19$
A) 1
B) $- 4$
C) $- 3$
D) 4
E) not arithmetic

Question

Quizplus · Accepted Answer

The sequence is arithmetic because there is a constant difference between each term. The common difference is found by subtracting any term from the term that follows it: $-7 - (-3) = -4$, $-11 - (-7) = -4$, and so on. Thus, the common difference is $-4$.

Determine Whether the Sequence Is Arithmetic −3,−7,−11,−15,−19- 3 , - 7 , - 11 , - 15 , - 19−3,−7,−11,−15,−19

Determine Whether the Sequence Is Arithmetic $- 3 , - 7 , - 11 , - 15 , - 19$