2003
Mathematics
JAMB
The graph of the function y = x2 + 4 and a straight line PQ are drawn to solve the equation x2 - 3x + 2 = 0. What is the equation of PQ?
A.
y = 3x - 2
B.
y = 3x + 2
C.
y = 3x - 4
D.
y = 3x + 4
Correct Answer: y = 3x + 2
Explanation
x2 + 4 = x2 - 3x + 2 3x + 2 = y
x2 + 4 = x2 - 3x + 2 3x + 2 = yTHIS WEEK's
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