Respuesta :

popcornrox37

Answer:

Step-by-step explanation:

So the equation used to find the axis of symmetry in a quadratic function is

x = -b / 2a

So our b term is = 3

and our a term is = 2

So:

-3 / 2(2)

or

x = -3 / 4

gmany

Answer:

x = -3/4

Step-by-step explanation:

The quadratic function:

[tex]f(x)=ax^2+bx+c[/tex]

The equation of an axis of symmetry:

[tex]x=\dfrac{-b}{2a}[/tex]

We have:

[tex]f(x)=2x^2+3x+9\\\\a=2,\ b=3,\ c=9[/tex]

Substitute:

[tex]x=\dfrac{-3}{2(2)}=-\dfrac{3}{4}[/tex]