A linear inequality in one variable is defined as an algebraic statement that relates a linear expression (with one variable) with a constant by >, <, ≥, and ≤ sign instead of =. For example, x ≤ 5. x + 3 > − 9. a ≥ − 11.
The graph of a linear inequality in one variable is a number line in which we use open circle for < and > and a closed circle for ≤ and ≥.
After completing this module, you will be able to:
Define an inequality in one variable.
Relate a linear equation with a linear inequality in one variable.
Use different methods of graphing an inequality in one variable to find its solution.