# How do you find the equation of the axis of symmetry of y = 3x² + 6x + 2?

Nov 3, 2015

The axis of symmetry is $x = - 1$.

#### Explanation:

$y = 3 {x}^{2} + 6 x + 2$ is a quadratic formula In the form $a {x}^{2} + b x + c$, where $a = 3 , b = 6 , \mathmr{and} c = 2$.

The equation for calculating the axis of symmetry for a quadratic equation is $x = \frac{- b}{2 a}$.

$x = \frac{- 6}{2 \cdot 3} =$

$x = \frac{- 6}{6} = - 1$

The axis of symmetry is $x = - 1$.