Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 25)
Which are the inequalities that define the shaded region in the graph?
y ≤ 4
y ≥ x - 3
y ≥ -x -1
y ≤ x - 3
説明
y≤4 is represented by the solid line, y ≥ x-3 is represented by the solid line, y ≥ -x-1 is not and y ≤ x-3 is not correct either.