8th Grade · Functions
Turning Point
8.F.B.5
Definition
A point where a graph changes direction, switching from increasing to decreasing or from decreasing to increasing. Straight lines have none.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- A graph that goes up then down has a turning point at the top.
- Turning points appear in nonlinear graphs, not straight lines.
Key rule
Linear graphs have no turning points — they go one direction forever.
Memory hook
Where the graph switches direction.