Representing Inequalities on a Number Line

This video tutorial teaches how to represent real-world scenarios involving inequalities using a number line. It begins with a review of key concepts such as variables and symbols, and explains the use of open and closed circles to denote different types of inequalities. An example is provided where the freezer temperature is set to prevent ice cubes from melting, illustrating the practical application of inequalities. The lesson concludes with a summary of the key points covered.

What temperature must the freezer be set at to ensure the ice cubes do not melt?

Describe how to shade the number line for the inequality x is less than or equal to 32.