# What is the axis of symmetry and vertex for the graph #y = x^2 - 4x + 1#?

##### 1 Answer

Apr 15, 2017

#### Explanation:

Find the axis of symmetry first using

The vertex lies on the line of symmetry, so we know

Use the value of

The vertex is at

You can also use the method of completing the square to write the equation in vertex form:

The vertex is at