# What is the axis of symmetry and vertex for the graph #y = x ^2 - 4 x + 3#?

##### 2 Answers

May 26, 2017

Vertex

Axis of symmetry

#### Explanation:

Given -

#y=x^2-4x+3#

Vertex -

x-coordinate of the vertex

#x=(-b).(2a)=(-(-4))/(2xx1)=4/2=2#

y-coordinate of the vertex

#y=2^2-4(2)+3=4-8+3=-1#

Vertex

Axis of symmetry

May 26, 2017

#### Explanation:

Another way of finding the axis and vertex is to complete the square

for the vertex find the

vertex

axis of symmetry simply the the x-value above

with the graph as before