Hello!
We have to remember that absolute value functions have the following form:

It means that there is a positive and a negative slope lines,
Let's find the information that we need to graph a absolute value function:
First:
Finding the y-intercept,

So, the y-intercept is (0,2)
Second:
Finding the two lines intercepts,
if x ≥ 0

if x< 0

Therefore,
If
, we have that:


So, both lines intercepts at (0,2).