Find the axis of symmetry of the curve \(y = x^{2} - 4x - 12\).

  • A x = -2
  • B y = -2
  • C x = 2
  • D y = 2
waec 2010furthermathematics

The correct answer is C. x = 2

The vertical line \(x = \frac{-b}{2a}\) is the axis of symmetry of the curve.

\(y = x^{2} - 4x - 12\)

\(\text{Axis of symmetry} = x = \frac{-(-4)}{2(1)} = \frac{4}{2} = 2\)

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