Triangle OPQ above is the solution of the inequ... - JAMB Mathematics 2003 Question
Triangle OPQ above is the solution of the inequalities
A
x + 1 ≥ 0, y + x ≤ 0, y - x ≥ 0
B
y + x ≤ 0, y - x ≥ 0, x -1 ≥ 0
C
x - 1 ≤ 0, y - x ≥ o, y + x ≥ 0
D
x - 1 ≤ 0, y + x ≤ 0, y - x ≤ 0
correct option: a
Lines bounding Δ OPQ
OQ; y - x = 0
y - x ≥ 0
PQ; x + 1 = 0
x + 1 ≥ = 0
PO; y + x = 0
y + x ≤ 0
∴ x + 1 ≥ 0, y + x ≤ 0, y - x ≥ 0
OQ; y - x = 0
y - x ≥ 0
PQ; x + 1 = 0
x + 1 ≥ = 0
PO; y + x = 0
y + x ≤ 0
∴ x + 1 ≥ 0, y + x ≤ 0, y - x ≥ 0
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