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

1 Answer
Jun 28, 2016

Answer:

#[-1, oo)#

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 #oo#, is used, the symbol must always be parentheses.