Answer:
x = 3
Explanation:
given a parabola in standard form : y = ax² + bx + c : a ≠ 0
Then the equation of the axis of symmetry is
x = -
![(b)/(2a)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/eoegn6mvxjwnsbs8qeqw3ayn0w36v7k5kl.png)
y = x² - 6x +
is in standard form
with a = 1 and b = - 6, hence
x = -
= 3
equation of axis of symmetry is x = 3