HELP THIS IS HARD SOMEONE pls

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|

Ys is the perpendicular bisector of xz what it is the length of xs