IM1.5.4 Intervals
Learning Target: We can express the domain, range, and other intervals (increasing/ decreasing) of a function using interval notation and inequalities so that we can efficiently describe functions.
When we’re describing functions, we often use intervals to talk about when they are increasing or decreasing and to define the domain and range. There are a few different ways to express intervals, and you will be responsible for knowing two of them: inequalities and interval notation.http://www.mathsisfun.com/sets/intervals.html For inequalities, remember
- > means greater than
- < means less than
- ≥ means greater than or equal to
- ≤ means less than or equal to
For intervals,
- ( ) are called parentheses or round brackets, and they mean DO NOT include the endpoints
- [ ] are called square brackets, and they mean DO include the endpoints
- both can be used together when we want to include one endpoint but not the other
Write the correct notation for A-J in the table above. Check your answers when you're done.