If the line in the graph is shifted up two units which is the equation of the new line

f (x) + 2.

Step-by-step explanation:

Example:

If we have say f (x) = x + 1 then 2 units will be added to f (x) when it is moved up 2 units.

So the equation of this line will be f (x) + 2 which in this example is

x + 1 + 2.

The new function is x + 3.