Final answer:
The axis of symmetry of the quadratic function f(x) = x^2 - 4x + 6 is found using the formula x = -b/(2a). For this equation, the axis of symmetry is x = 2.
Step-by-step explanation:
The axis of symmetry for the parabola described by the quadratic equation f(x) = x^2 - 4x + 6 can be found by using the formula x = -b/(2a) for a parabola in the form ax^2 + bx + c. Here, a is the coefficient of x^2 and b is the coefficient of x. In this equation, a = 1 and b = -4, so the axis of symmetry is x = -(-4) / (2 \u00d7 1) = 2. Therefore, the correct answer is B. x = 2.