Inequalities Part 3

Sick of ads?‚Äč Sign up for MathVids Premium
Taught by YourMathGal
  • Currently 4.0/5 Stars.
6773 views | 2 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, the instructor teaches how to solve and graph linear inequalities on a number line. The lesson covers different approaches for solving these inequalities, including multiplying both sides by the reciprocal or by the least common denominator. It is important to remember that if you multiply or divide by a negative number, you must switch the inequality symbol. The instructor also emphasizes the importance of checking the solutions to ensure they are valid.

Lesson Description:

Solving and Graphing Linear Inequalities on a number line

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you solve and graph linear inequalities on a number line?
  • How do you solve and graph 3x - 4 <= -10?
  • How do you check the solution to an inequality?
  • How do you solve and graph -2/3x <= 2?
  • When do you have to flip an inequality sign?
  • How do you solve an inequality for a variable when the coefficient of the variable is negative?
  • How do you know when to draw an open or a closed circle on your starting point when graphing an inequality on a number line?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson takes what we learned from the properties of inequalities in the previous lesson and uses them to solve and graph inequalities on a number line and then check the solution. Several example problems are done in this lesson and explained step by step. Flipping the inequality sign is explained as well.