You have the following function f(x):
[tex]f(x)=\left|4x-3\right|+2[/tex]When you translate a function f(x) in b units, the new function can be described as follow:
[tex]g(x)=f(x)+b[/tex]where b is a number, positive or negative. It is positive if the translation is upward, it is negative if the translation is downward. In this case you have that the translation is 2 units downward, then, you obtain for the new function g(x):
[tex]\begin{gathered} g(x)=f(x)-2 \\ g(x)=\left|4x-3\right|+2-2 \\ g(x)=\left|4x-3\right| \end{gathered}[/tex]