Convert an inequality to interval notation. Enter the bounds and inequality type to get the interval, set notation, and number line.
| Notation | Inequality | Meaning |
|---|---|---|
| (a, b) | a < x < b | Open — endpoints excluded |
| [a, b] | a ≤ x ≤ b | Closed — endpoints included |
| [a, b) | a ≤ x < b | Half-open — a included, b excluded |
| (a, +∞) | x > a | Unbounded right, open at a |
| (−∞, b] | x ≤ b | Unbounded left, closed at b |