Algebra 1a: Chapter 4, Lesson 1, page 172.
Inequalities and Their Graphs
Symbols:
- `<`, is less than
- `≤`, is less than or equal to
- `>`, is greater than
- `≥`, is greater than or equal to
Open or closed circles on the number line:
- OPEN CIRCLE (get as close to the value BUT don’t touch) it for `<` or `>`
- CLOSED CIRCLE (included the value on the number line) for `≤` or `≥`