Linear inequality in one variable – solution set on a number line

MathematicsAlgebraAges 14–15

Solve the inequality ax + b > c (or <, ≥, ≤) step by step: transpose terms, then divide both sides by a and flip the sign when a < 0. The solution set is shaded on a number line; drag the test point x to check by substitution, drag the root marker to change c, and click to switch the inequality sign.