Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - 7-8 Geometric Sequences - Practice and Problem-Solving Exercises - Page 471: 42


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.
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