Question 3
InequalitiesIf x varies over the set of real numbers, which of the following is illustrated in the diagram above?
- A.−3 < x ≤ 2
- B.−3 ≤ x < 2
- C.−3 < x < 2
- D.−3 ≤ x ≤ 2
- E.x ≥ 2
Show the answer and explanation
Answer: B (−3 ≤ x < 2)
Explanation
The shaded (filled) dot at −3 means −3 is included; the open circle at 2 means 2 is not included. So −3 ≤ x < 2.