Practice Interval Notation in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A shorthand for writing all real numbers in a range, using parentheses for excluded endpoints and square brackets for included endpoints.
Parentheses mean the endpoint is NOT included; square brackets mean it IS included. For example, (2, 5] means 2 < x \le 5.
Example 1
easyWrite x > 3 in interval notation.
Example 2
mediumWrite -2 \leq x < 5 in interval notation.
Example 3
easyWrite x \leq 7 in interval notation.
Example 4
mediumConvert the interval [0, 4) to inequality notation.