Algebra 1: Common Core (15th Edition)

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

Chapter 4 - An Introduction to Functions - 4-7 Arithmetic Sequences - Lesson Check - Page 278: 6


Therefore the common difference is -6.

Work Step by Step

The sequence: 25, 19, 13, 7 To find the common difference, the difference between two consecutive terms are found. Difference between 1st and 2nd term: 2nd term-1st term=Difference 19-25=-6 Difference between 2nd and 3rd term: 3rd term-2nd term=Difference 13-19=-6 Difference between 3rd and 4th term: 4th term-3rd term=Difference 7-13=-6 Therefore the common difference is -6.
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