Mastering Inequalities: Solving and Graphing
Mastering Inequalities: Solving and Graphing
Learning objective
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Mastering Inequalities: Solving and Graphing
Learning objective
Learning Objectives
At the end of the lesson, you will be able to solve inequalities and graph them on a number line.
What do you already know about inequalities and their graphs?
Understanding Inequalities
Inequalities show the relative size between two values. Symbols: <, >, ≤, ≥.
Solving Linear Inequalities
To solve, isolate the variable using addition, subtraction, multiplication, or division.
Graphing Inequalities on a Number Line
Use an open circle for < or >. Use a closed circle for ≤ or ≥. Shade the solution area.
Interactive Exercise: Solving
Solve: 2x + 3 > 7. Click to reveal the solution.
Interactive Exercise: Graphing
Graph: x ≤ 4. Click to reveal the correct graph.
Common Mistakes
Avoid errors: Remember to flip the sign when multiplying/dividing by a negative.
Group Work....One student record final answer
