Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 13)
Which of these inequalities is represented by a graph with an open circle at -1 and shading to the right?
x < -1
x > -1
x ≤ -1
x ≥ -1
คำอธิบาย
Open circle means the value is not included and shading to the right means greater than.