Lesson 15

# Lesson 15 - Lesson 15 Inequality: - a statement that two...

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Lesson 15 Inequality: - a statement that two quantities or expressions are not necessarily equal - an inequality can be expressed using any of the following signs: ± ²± ³± ´± µ Example 1: Express the following statements as inequalities: a. is at least 18 b. · is no more than 30 c. ¸ is larger than 5 d. ¹ is not 13 e. The room temperature is between 68 and 72 degrees, inclusive. Solution set: - the set of all values that make an equation or an inequality true - the solution set of an inequality can be expressed using inequality signs or using interval notation Interval: - a set of real numbers between two endpoints, which may or may not be included - every number (integers, rationals, irrationals) between the endpoints is included in the interval - when endpoints are included, square brackets are used - when endpoints are NOT included, parentheses are used What if only one endpoint is included?

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What if one endpoint is infinity (or negative infinity)?
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## This document was uploaded on 03/30/2012.

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Lesson 15 - Lesson 15 Inequality: - a statement that two...

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