Khan Academy on a Stick
Linear inequalities
Exploring a world where both sides aren't equal anymore!
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Multiplying and dividing with inequalities
Our discussion of linear inequalities begins with multiplying and dividing by negative numbers. Listen closely for the word "swap." Super important!
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Multiplying and dividing with inequalities example
In addition to solving the inequality, we'll graph the solution. Remember to swap if you mutiply both sides of the inequality by a negative number.
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Constructing and solving a one-step inequality
Inequalities are more than abstract concepts and exercises. They help solve real life problems. Here's an example.
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One-step inequality involving addition
One-Step Inequalities
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Inequalities using addition and subtraction
Inequalities Using Addition and Subtraction
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Solving a two-step inequality
We're turning up the heat a little and asking you to help us solve a multi-step inequality problem.
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Multi-step inequalities
Compound Inequalities
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Multi-step inequalities 2
Multi-Step Inequalities 2
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Multi-step inequalities 3
Multi-Step Inequalities
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Constructing and solving a two-step inequality
We'll talk you through this fun and challenging inequality problem.
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Constructing and solving a multi-step inequality example
Here's an opportunity for you to follow along with us as we interpret, construct, and solve a word problem inequality. It will be fun!
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Constructing, solving two-step inequality example
Let's tackle this word problem together. We'll interpret the information and then construct a linear inequality to solve it.
Thinking algebraically about inequalities
In this tutorial you'll discover that much of the logic you've used to solve equations can also be applied to think about inequalities!
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Compound inequalities
Compound Inequalities
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Compound inequalities
Compound Inequalities
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Compound inequalities 2
Compound Inequalities 2
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Compound inequalities 3
Compound Inequalities 3
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Compound inequalities 4
Compound Inequalities 4
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Absolute value inequalities
Absolute Value Inequalities
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Absolute value inequalities example 1
Absolute value inequalities, graph solution on number line
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Absolute value inequalities example 2
Absolute Value Inequalities
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Absolute value inequalities example 3
Absolute value inequalities 3
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Writing and using inequalities
Writing and using inequalities
Compound and absolute value inequalities
You're starting to get comfortable with a world where everything isn't equal. In this tutorial, we'll add more constraints to think of at the same time. You may not realize it, but the ability to understand and manipulate compound and absolute value inequalities is key to many areas of science, engineering, and manufacturing (especially when tolerances are concerned)!
Dogs cats and bears in a pet store visual argument
Dogs cats and bears in a pet store analytic argument
Reasoning through inequality expressions
Using expressions to understand relationshipsStructure in linear expressions
Algebra isn't just some voodoo concocted to keep you from running outside. It is a way of representing logic and manipulating ideas. This tutorial will have blood flowing to your brain in record quantities as you actually have to think about what the algebraic expressions and equations actually mean!