# How do you find the vertex of this parabola #y=4x-x^2#?

##### 2 Answers

Apr 17, 2015

Vertex (2,4)

Rewrite the equation as y = -

= -

= -

The vertex is (2,4)

Apr 17, 2015

Vertex is

Step 1: Complete the square

Step 2: Arrange so that you get the form

From here you can conclude that the vertex is at