Answer
The sequence is not geometric
Work Step by Step
You are given the sequence -3,-1,3,1.The starting value $a_{1}$=-3.Find the common ratio by using the formula: R=$\frac{a2}{a1}$,R=$\frac{a4}{a3}$.Plug in the values to get the ratio:
r=$\frac{-1}{-3}$=$\frac{1}{3}$
r=$\frac{3}{1}$=3
There is no common ratio. So the sequence is not geometric.
