Domain and Range in Interval Notation

The domain of a function is the set of all possible input values (x-values) for which the function is defined.

The range of a function is the set of all possible output values (y-values) that the function can produce.

Domain is represented in interval notation using brackets [ ] for inclusive endpoints and parentheses ( ) for exclusive endpoints.

Range is represented in interval notation using brackets [ ] for inclusive endpoints and parentheses ( ) for exclusive endpoints.

The interval (-2, 3] represents all real numbers greater than -2 and less than or equal to 3.

The interval [-3, 1) represents all real numbers from -3 to 1, including -3 but not including 1.

The domain is found by reading the ends of the graph from left to right.

The range is found by reading the ends of the graph from bottom to top.

Open intervals do not include their endpoints (using parentheses), while closed intervals do include their endpoints (using brackets).

The interval (-3, 3) represents all real numbers greater than -3 and less than 3, excluding -3 and 3.