The graph of the function:

Can be obtained by using the parent function:

Whose graph is shown below:
We must first turn x into -x by making a reflection over the y-axis. This way, the function becomes:

And the graph is:
Finally, we just add 4 to x to translate the graph 4 units to the right to get our desired function:

The graph is shifted 4 units to the right as shown: