Interval Notation Lesson

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In this section, we review how to write the solution for a linear inequality in one variable using interval notation. Interval notation allows us to
notate a specific interval or range of numeric values. Typically we see this when solving a linear inequality in one variable. We may see a result of:
x > 3. In this case, any value that is larger than 3 is a solution to that particular inequality. This is notated with interval notation as: (3, ∞).
Additionally, we review how to display intervals using a number line. This process closely resembles interval notation. We use a bracket at the number to
include it or a parenthesis to not include it. Some courses will use a filled in circle for inclusion and an open circle for exclusion. We shade areas to
visually represent the solutions to the inequality. Lastly, we will review how to write a solution using set builder notation. As an example, x > 3
would be displayed in set builder notation as: {x|x > 3}. This is read as "the set of all x, such that x is greater than 3". This essentially just
tells us that x can take on any real number that is larger than 3.

Interval Notation Resources:

Videos:

Khan Academy - Video
Mary Robinson - YouTube - Video
Bill Witte - YouTube - Video
Text Lessons:

Cool Math - Text Lesson
Varsity Tutors - Text Lesson
Math is Fun - Text Lesson
Worksheets:

Cerritos EDU - Worksheet
WS - Worksheet
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