Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 29)
Which of the following is the correct way to represent the graph of the inequality x ≥ 3 on a number line?
A closed circle on 3 and a line shading to the left.
An open circle on 3 and a line shading to the left.
A closed circle on 3 and a line shading to the right.
An open circle on 3 and a line shading to the right.
Vysvětlení
x ≥ 3 is inclusive (closed circle) and all values greater than 3 (shading right).