# How do you solve and write the following in interval notation: x ≥ -1?

Jun 28, 2016

$\left[- 1 , \infty\right)$

#### Explanation:

Brackets mean that the value is included. For example:

[ 5,

From this I can already tell $5$ is a solution, because of the bracket.

Parentheses indicate that the value is not included. For example:

, 4)

From this we can identify that $4$ is not a solution, but all values go up to that number, not including it.

Whenever infinity, or $\infty$, is used, the symbol must always be parentheses.