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
The correct answer is: B
Explanation
x\(^2\) + 4 = x\(^2\) - 3x + 2
3x + 2 = y