The function is .

The function is a square root function.

The standard form of the square root function is .

Graph : 

Graph of the modulus function :

The function is .

Compare the above function with standard square root function.

So .

Vertical shift : , shift the graph of a distance units downward.

Therefore, is the graph of shift to a distance of unit downward.

Graph :

Graph of the function .

(1) Draw the coordinate plane.

(2) Graph of the function .

(3) Shift the graph of to a distance of unit downward.

The function is .

The function is a modulus function.

For a modulus function, all negative values of are considered as positive.

So the portion of below axis is reflected about the axis.

Graph :

Graph of the function :

(1) Draw the coordinate plane.

(2) Graph of the function .

(3) The portion  below axis is reflected about the axis.

Graph of the function is

.