Question

The graph of the function f(x)= x squared - 4x+6 is shown here. What is its axis of symmetry?A. x=0B. x=2C. x=6D. x=-2

Answer 1

From the graph,

we can see that the axis of symmetry is

x = 2

Analytically:

f(x) = (x-2)squared - 4 + 6

f(x) = (x-2)squared + 2

Hence the axis of symmetry is x = 2