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Inequalities

4 videos
3 skills
Not all expressions are created equal, but we can still use some algebra to compare unequal numbers, variables, and/or expressions in interesting ways, like inequalities. You've heard of "greater than" and "less than," right? Terrific! First we'll express inequalities on a number line and then write them using information in word problems. Common Core Standard: 6.EE.B.8

Inequalities: plotting on a number line

VIDEO 6:14 minutes
We've been taking a lot of equalities. What about when the relationships between numbers need to be expressed as inequalities? For example, less/greater than and/or equal to? How can we represent that idea on a number line?

A simple inequality: plotting on a number line

VIDEO 1:34 minutes
We're plotting a simple inequality on a number line in this example.

Inequalities on a number line

PRACTICE PROBLEMS
Write equations of inequalities graphed on number lines. Identify number line graphs of inequalities.

Inequality word problems

VIDEO 3:28 minutes
We're writing inequalities by using information from the word problems. Woohoo!

Inequality word problem: one variable

VIDEO 2:27 minutes
This time we're creating a variable to represent a number, and then writing an inequality. We're building on our knowledge.