Linear Equations - Introduction

Graphical Solution of Linear Inequalities

Step 1. Plot the line of the linear inequality treating it as linear equation. You will get a  straight line. The line can be dotted ( in case of strict inequality involving < or >  symbol) or it can be a solid line (involving >= or <= symbol). Step 2. Take a test point , (the origin is the most convenient unless the line of the inequality falls on it), and plug it into the same linear inequality. If the test point makes the inequality true, then shade that side of the line. If the test point makes the inequality false, then shade the opposite side of the line. Enter a new inequality in the text field. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com