Find the equation of the axis of symmetry of the parabola.
-$$f ( x ) = x ^ { 2 } - 4$$
A) $y = 4$
B) $x = - 4$
C) $y = - 4$
D) $x = 0$

Question

Quizplus · Accepted Answer

The axis of symmetry of a parabola in the form $f(x) = ax^2 + bx + c$ is given by the formula $x = -\frac{b}{2a}$. For the given equation $f(x) = x^2 - 4$, $a = 1$ and $b = 0$, so the axis of symmetry is $x = -\frac{0}{2(1)} = 0$, which corresponds to $x = 0$.

Find the Equation of the Axis of Symmetry of the Parabola