Answer:
1. X ≥ 4 {x/x ≥ 4} (4,+∞)
2. X < 2 {x/x < 2} (-∞, 2)
3. X ≤ 4 {x/x ≤ 2} (-∞, 4)
for the graph:
draw a line from -4 to 1 like in the pic
then identify the interval notation if positive then dont shade the circle and if negative shade the circle
