Find the equation of the axis of symmetry of the parabola.
-$$f ( x ) = x ^ { 2 } + 9$$
A) $x = - 9$
B) $y = 9$
C) $x = 9$
D) $x = 0$

Name: Find the equation of the axis of symmetry of the parabola. -\[f ( x ) = x ^ { 2 } + 9\] A) $x = - 9$ B) $y = 9$ C) $x = 9$ D) $x = 0$
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Question

Quizplus · Accepted Answer

The axis of symmetry of a parabola in the form $f(x) = ax^2 + bx + c$ is given by $x = -\frac{b}{2a}$. For the given parabola $f(x) = x^2 + 9$, $a = 1$ and $b = 0$, so the axis of symmetry is $x = -\frac{0}{2(1)} = 0$.

Find the Equation of the Axis of Symmetry of the Parabola