Algebra Unit Review - Inequalities

Front

What is interval notation?

Back

Interval notation is a way of representing a range of numbers using parentheses and brackets. Brackets [ ] indicate that the endpoint is included (closed interval), while parentheses ( ) indicate that the endpoint is not included (open interval).

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Back

[0, 3]

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Back

(-∞, 8)

Front

What does an open circle represent on a number line?

Back

Front

What does a closed circle represent on a number line?

Back

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Back

x < -3 and x > -4

Front

Back

x > -7

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Back

-5 < x < 5

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Back

Draw a number line, place an open circle at 2, and shade to the right.

Front

What is the difference between strict and non-strict inequalities?

Back

Strict inequalities (<, >) do not include the endpoints, while non-strict inequalities (≤, ≥) do include the endpoints.