Exploring Interval Notation, Domain, and Range

The number is included in the interval.

The number is the endpoint of the interval.

The number is not included in the interval.

The number is the midpoint of the interval.

Angle bracket < >

Bracket [ ]

Parenthesis ( )

Curly brace { }

A very large number that can be reached.

A number that is always included in the interval.

A number that is always excluded from the interval.

An idea of an unbounded quantity.

(2, ∞)

[2, ∞)

(-∞, 2)

(-∞, 2]

Union of intervals

Difference of intervals

Complement of intervals

Intersection of intervals

All possible y-values

All possible w-values

All possible x-values

All possible z-values

[x, ∞)

(-∞, x]

(-∞, 0)

(-∞, ∞)

All possible x-values

All possible y-values

All possible z-values

All possible w-values

[y, ∞)

[y, ∞]

(-∞, ∞)

(-∞, y]

{-2, 0, 1, 3, 5, 7}

(-2, 5)

{-2, 0, 1, 3, 5}

[-2, 5]