Answer
$\text{horizontal; right}$
Work Step by Step
The graph of the function $y=f(x-a)$ involves a $\bf{horizontal}$ shift of $a$ units to the $\bf{right}$ of the original function $f(x)$ when $a\gt0$ and $|a|$ units to the left when $a \lt0$.
Thus, the given function, where $a=2$, can be obtained by $2$-unit shift to the $\bf{right}$ of the original function $f(x)$.
Thus, the missing words in the givens statements are : horizontal; and right.
