Determine Whether the Sequence Is Geometric $- \frac { 1 } { 3 }$

question 31

Multiple Choice

Determine whether the sequence is geometric. If so, find the common ratio. 1, -3, 9, -27, ...

• A)-3
• B)1
• C) \(- \frac { 1 } { 3 }\)
• D)3
• E)not geometric