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Calculus IV
15.Functions of Several Variables
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Course: Algebra I / Elementary Algebra
Topic: Linear Equations and Inequalities
Subtopic: Solving Double Inequalities

Overview

Double inequalities means to combine two inequalities together in a single statement like 4<2x-1<10. The key to solving double inequalities is simply to get x isolated in the middle. The final answer will usually be written in interval notation, but could be given in interval notation or graphed on a number line.

Objectives

By the end of this topic you should know and be prepared to be tested on:

Terminology

Define: double inequality

Text Notes

Many textbooks cover business applications of inequalities at this time. If yours does you can SKIP the business applications, revenue function, cost function, profit function, and all of the graphing stuff! You will NOT be tested on these topics in this level course.

If your textbook covers equations/inequalities that contain absolute values you may SKIP these problems! You will NOT be tested on these topics in this level course.