Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.9 - Linear Inequalities and Absolute Value Inequalities - Exercise Set - Page 138: 51

Answer

$[-1,3)$

Work Step by Step

The idea is to isolate x on one side. Adding, subtracting or multiplying/dividing with a positive number preserves order (the inequality symbol remains the same). Multiplying/dividing with a negative number inverts the order (the inequality symbol changes). --- $-3 \leq x-2 \lt 1 \qquad $ ... add $2$ to all $-3+2 \leq x-2+2 \lt 1+2$ $-1\leq x \lt 3$ ... left border included, right border excluded The solution set is $[-1,3).$
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