Lester thinks that the solution of any inequality with a > sign is the region above the line and the solution of any inequality with a < sign is the region below the line. Is Lester correct?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter10: Inequalities
Section10.7: Graphing Linear Inequalities
Problem 24WE
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Lester thinks that the solution of any inequality with a > sign is the region above the line and the solution of any inequality with a < sign is the region below the line. Is Lester correct?

Expert Solution
Step 1

In this case graph can be of two type: Horizontally or vertically.

Case 1: When a graph (or line) is horizontal then we can talk about the above the line(boundary of the graph) or below the line(boundary of the graph).

Case 2: When a graph (or line) is vertical then we can talk about the right of the line(boundary of the graph) or left of the line(boundary of the graph).

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