Question

The graph of which function has an axis of symmetry at x = 3?

Answer 1

f(x) = x² - 6x - 1

To find the axis of symmetry, use the axis of symmetry formula: -b\2a, according to the Quadratic Equation y = Ax² + Bx + C. You understand?

Answer 2

Answer:

$f(x) = x^2 - 6x -1$

Step-by-step explanation:

To find axis of symmetry we use formula

$x=\frac{-b}{2a}$

$f(x) = x^2 + 3x +1$

a=1, b=3

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

$f(x) = x^2 -3x - 3$

a=1, b=-3

$x=\frac{3}{2}$

$f(x) = x^2 + 6x + 3$

a=1, b=6

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

$f(x) = x^2 - 6x -1$

a=1, b=-6

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