21.1 Express linear inequalities
Express linear inequalities
Linear inequalities can be represented both graphically and algebraically. In this lesson, we will learn how to express linear inequalities as an equation and on a number line.
Basic concepts:
 Cartesian plane
 Comparing and ordering rational numbers
Lessons

1.
Express the following inequalities algebraically.

2.
Graph each inequality on a number line.

3.
Find the possible values of $x$ on a number line.

4.
A Christmas tree must be 2 feet or taller so that the farmers will cut it down and sell it in the market.