Interval simply represent the set of numbers containing all numbers between any two numbers.
The representations of [tex](-\infty, -6][/tex] are [tex]\{x| x \in R, x \le -6 \}[/tex] and [tex]x \le -6[/tex]
From the question, we have:
[tex](-\infty, -6][/tex]
The above representation is in interval notation.
The interpretation is that;
The highest number in the interval is -6
The equivalent using set notation is:
[tex]\{x| x \in R, x \le -6 \}[/tex]
The equivalent using inequalities is:
[tex]x \le -6[/tex]
Read more about intervals at:
https://brainly.com/question/17249352
