# How do you find the vertex of #f(x) = x^2 + 3#?

##### 1 Answer

Apr 25, 2016

#### Explanation:

The equation of a parabola (with vertical axis) in vertex form can be written:

#f(x) = a(x-h)^2 + k#

where

In our case we find:

#f(x) = 1(x-0)^2+3#

which means that

So the vertex is

Alternatively, note that

Substituting

Hence the vertex is at