To sketch: The function by hand without plotting any points and then graph of the function .
The standard graph of the function is roughly drawn as shown below in Figure 1.
Then, draw the graph of by shifting the graph by 2 units downward. Thus, the graph of is shown below in Figure 2.
Observe that Figure 2 is obtained from Figure 1 in such a way that it is shifted downward by 2 units.
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