Linear inequalities in one variable

Overview

Show solution sets of ax + b ? 0 on the number line.

Explanation

A linear inequality’s solution set is usually a ray (or all reals / empty).
If a > 0 the inequality direction stays; if a < 0, dividing by a reverses it.
Closed vs open endpoint matches whether equality is included.

How to use

Adjust a, b and the inequality; watch the ray and endpoint style. Note a < 0 flips the sign.

Knowledge points

• Inequalities
• Number line