Which number line represents the solution set for the inequality –1/2x ≥ 4?

First of all, x needs to be solved for-
-1/2x4
Multiply both sides by -2
-1/2(-2)x4(-2)
x-8
The inequality sign means that-
x is equal to or less than -8.
If the arrow is pointing to the right, it means greater.  If it is pointing to the left it means that the value is less.  All these choices have closed circles to show that x can be equal to the value.

B. is the answer.  It shows that x is equal to or less than -8