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X≤3 convert to interval notation

User Alepeino
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Final answer:

To convert the inequality x≤3 into interval notation, it is written as (-∞, 3], including all numbers up to and including 3.

Step-by-step explanation:

To convert the inequality x≤3 into interval notation, you recognize that this inequality includes all real numbers up to and including 3. In interval notation, this is expressed as (-∞, 3], where the parenthesis indicates an open end that does not include the number -∞ (since ∞ is not a number that can be reached or included), and the square bracket indicates a closed end that includes the number 3.

User RaTiO
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3 is greater or equal to x so 3 gets a bracket and the infinity symbol always gets a parenthesis even if it’s a negative
X≤3 convert to interval notation-example-1
User Junbang Huang
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