Find the common ratio r for the given infinite geometric sequence.
-$1 , - 3,9 , - 27,81 , \ldots$
A) $- 4$
B) $- \frac { 1 } { 3 }$
C) 3
D) $- 3$

Question

Quizplus · Accepted Answer

The common ratio $r$ of a geometric sequence can be found by dividing any term by the preceding term. For this sequence, dividing the second term (-3) by the first term (1) gives $-3$, which is the common ratio.

Find the Common Ratio R for the Given Infinite Geometric 1,−3,9,−27,81,…1 , - 3,9 , - 27,81 , \ldots1,−3,9,−27,81,…

Find the Common Ratio R for the Given Infinite Geometric $1 , - 3,9 , - 27,81 , \ldots$