Inequality statements are defined, solution sets explained, the use of a number line demonstrated, and the less than and greater than symbols illustrated.
How to solve more complex inequality problems.
Inequalities can be written in more than one way. X < 10, for example, is the same as 10 > X.
This clip summarizes the number line and how it can be used to show which of two whole numbers is greater, according to where each appears on a straight line. The clip revisits related concepts, including unit distance, graphs, coordinates, inequali...
When and how to combine two inequalities into one statement, called a compound inequality.
This clip demonstrates how "less than" and "greater than" look on the number line. We learn that with any two whole numbers that are not equal, the greater number will always appear on the right, and the smaller number always appears on the left.
It is necessary to reverse the inequality symbol whenever you multiply or divide by a negative number.
Step-by-step demonstration of combining inequalities.