Question on: JAMB Mathematics - 2002
Using the graph find the values of p and q if px + qy (\geq) 4
A
p = 2, q = -1
B
p = -1, q = 2
C
p = 2, q = 2
D
p = 1, q = 2
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Correct Option: B
m = (\frac{y_2 - y_1}{x_2 - x_1} = \frac{2 - 0}{0 - (4)} = \frac{2}{4} = \frac{1}{2})
(\frac{y_2 - y_1}{x_2 - x_1} \geq m)
(\frac{y - 0}{x + 4} \geq \frac{1}{2})
2y (\geq) x + 4, -x + 2y (\geq) 4 = px + qy (\geq) 4
p = -1, q = 2
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