Question

find the equation of the axis of symmetry for the parabola $y = x^2 + 9$. simplify any numbers and write them as proper fractions, improper fractions, or integers.

Explanation:

Step1: Recall parabola axis formula

For $y=ax^2+bx+c$, axis is $x=-\frac{b}{2a}$.

Step2: Identify coefficients

In $y=x^2+9$, $a=1$, $b=0$.

Step3: Calculate axis value

$x=-\frac{0}{2\times1}=0$

Answer:

$x=0$