Mark All of the Following Functions That Are Neither Increasing $\frac{1}{2} f(x)-1=-x$

Multiple Choice

Mark all of the following functions that are neither increasing nor decreasing.

A) $\frac{1}{2} f(x) -1=-x$
B) $-\frac{1}{2} g(x) =-x+1$
C) $4 h(x) +x=2$
D) $j(x) =-2 x$
E) $k(x) =2$
F) $4 p(x) +x=6$