Question

How do you solve and write the following in interval notation: `| x | ≥ 4`?

Answer 1

See a solution process below:

Explanation:

The absolute value function takes any negative or positive term and transforms it to its positive form. Therefore, we must solve the term within the absolute value function for both its negative and positive equivalent.

So, solved this is:

`-4 >= x >= 4`

Or

`x <= -4` and `x >= 4`

Or, in interval notation:

`(-oo, -4]`; `[4, oo)`