8th Grade · Functions
Nonlinear
8.F.B.5
Definition
Describes a function whose graph is not a straight line and whose rate of change is not constant. The differences between successive outputs are unequal.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- Differences of +3, +5, +7 are unequal, showing a nonlinear pattern.
- A curved graph is nonlinear.
Key rule
Unequal differences in a table signal a nonlinear function.
Memory hook
Curved graph, changing rate.