The interval notation for all real numbers between and including $-2$ and $6$ is:

$[-2, 6]$

Here:

• The square brackets $[ ]$ indicate that $-2$ and $6$ are included in the interval.

Would you like more details, or do you have any questions?

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1. What is interval notation for values between $-5$ and $10$, not including endpoints?
2. How do you represent all real numbers greater than or equal to $3$ in interval notation?
3. Can you show interval notation for all real numbers less than $0$?
4. What would the interval notation look like for numbers between $-\infty$ and $4$, including $4$?
5. How does interval notation change for open vs. closed intervals?

Tip: In interval notation, square brackets $[ ]$ include endpoints, while parentheses $( )$ exclude them.