Which of these equations best describes the points of intersection of the curve and the...
MATHEMATICS
WAEC 2006
Which of these equations best describes the points of intersection of the curve and the line?
- A. \(x^2 + 5x - 6 = 0\)
- B. x2 - 5x - 6 = 0
- C. x2 + x - 6 = 0
- D. x2 - x - 6 = 0
Correct Answer: C. x2 + x - 6 = 0
Explanation
The roots are -3 and 1
x = -3 and x = 1
y = (x + 3)(x - 1)
= x2 - x + 3x - 3
y = x2 + x - 6 = 0
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