Answer
$$x\leq 10
.$$
Work Step by Step
By adding $-4$ to both sides of the inequality $4-x\geq -6$ and then dividing by (-1), we have
$$
4-x\geq -6 \Longrightarrow -x\geq -10 \Longrightarrow x\leq 10
.$$
See the figure below.
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