Question

What is the axis of symmetry for f(x) = 2x − 8x + 8? (1 point) Select one: a. x = −2 b. x = −3 c. x = 3 d. x = 2

Answer 1

x=2

Explanation:

F(x) = 2x^2 - 8x +8

Axis of symmetry lies at the x coordinate of vertex

To find x coordinate of vertex use formula

`x=(-b)/(2a)`

from the given f(x) , a= 2 and b = -8

Plug in all the values

`x=(-(-8))/(2(2))`

`x=(8)/(4)=2`

x=2

So the axis of symmetry at x=2