Which of the following inequalities has a solution set that, when graphed on a number line, is a single, finite line segment?
Running through the list, it's pretty easy to rule out A, B, C
Let's try D
-x≥4 ===> x≤-4
In other words, x may be greater than four (going from left to infinity on the number line) or it could be less than negative four (going from right to negative infinity on the number line)
-x≤4 ===> x≥-4
In other words, x could be between -4 and 4 on the number line.