2006
Mathematics
JAMB
The solution set of the shaded area above is
A.
Y ≥ 0, y ≥ x and y + x ≤ 4
B.
Y ≤ x, y + x ≤ 4
C.
Y + x ≥ 4, y ≤ x
D.
Y ≤ x, y + x ≤ 4 and y ≥ 0
Correct Answer: Y ≤ x, y + x ≤ 4
Explanation
Y = x implies y ≤ x Y + x = 4 implies y = 4 – x ∴y = 4 – x ∴y ≤ x, y + x ≤ 4 and y ≥ 0
Y = x implies y ≤ x Y + x = 4 implies y = 4 – x ∴y = 4 – x ∴y ≤ x, y + x ≤ 4 and y ≥ 0THIS WEEK's
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