Solving & Graphing Inequalities

Solving & Graphing Inequalities

Properties of Inequality

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Properties of Inequality

You have been using the addition and multiplication properties of equality to help you solve equations.

Addition Property of Equality
You can add any number to both sides of an equation and the result will be a true equation.

Multiplication Property of Equality
You can multiply both sides of an equation by any number and the result will be a true equation.

Today you will work with inequalities. For the inequality –3 < 4, discuss what happens when you add or multiply as specified.

  • Add 2 to each side.
  • Add –2 to each side.
  • Multiply each side by 2.
  • Multiply each side by –2.
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