Question

use $2x^2 + 8x + 13$ to answer the following questions.
$x = -\frac{b}{2a}$
use your value of $x$ in the equation to find the $y$-coordinate of the vertex.
$f(x) = a(x - h)^2 + k$

1. what is the equation for the axis of symmetry?

you must enter your answer as $x=$
type a response

Explanation:

Step1: Identify a and b values

For quadratic $ax^2+bx+c$, here $a=2$, $b=8$.

Step2: Apply axis of symmetry formula

Use $x=-\frac{b}{2a}$
$x=-\frac{8}{2\times2}$

Step3: Calculate the value

$x=-\frac{8}{4}=-2$

Answer:

$x=-2$