JAMB - Mathematics (2003 - No. 14)
The graph of the function y = x\(^2\) + 4 and a straight line PQ are drawn to solve the equation x\(^2\) - 3x + 2 = 0. What is the equation of PQ?
y = 3x - 2
y = 3x + 2
y = 3x - 4
y = 3x + 4
解释
x\(^2\) + 4 = x\(^2\) - 3x + 2
3x + 2 = y
3x + 2 = y