Which of the following equations is the translation 2 units down of the graph of y = |x |?A y = |x - 2|B y = |x + 2|C y = |x | - 2D y = |x | + 2

The first two move the graph left or right. (x - 2 moves the graph right)
The answer you want is either c or d.
Up would be plus 2 and down would be - 2

Since you want down, the answer is C  <<<<<answer.
Note In the graph 
Violet is y = abs(x - 2)
Blue is y = abs(x + 2)
Green (answer) = abs(x) - 2 
Bright red = abs(x) + 2