Express the interval using two different representations. open square bracket, minus, 6, comma, 9, close square bracket [ − 6 , 9 ] [−6,9]

Answer 1

-6 ≤ x ≤ 9

{x l x ≥ -6 and x ≤ 9}

Answer 2

You might also want to remember that the method of specifying the solution set with only an inequality is called inequality notation.

The method with braces is called set builder notation.

There are also the statement notation and the roster notation methods. You don't need to worry about them right now, unless your teacher brings them up.