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?

  • A y = 3x - 2
  • B y = 3x + 2
  • C y = 3x - 4
  • D y = 3x + 4
jamb 2003mathematics

The correct answer is B. y = 3x + 2

x\(^2\) + 4 = x\(^2\) - 3x + 2

3x + 2 = y

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