8th Grade · Functions

Slope

8.EE.B.6 · 8.F.A.3 · 8.SP.A.3

Definition

The constant rate of change of a linear function, equal to rise over run. It tells how much the output changes for each unit increase in the input.

Teach it

Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.

Examples

  • In f(x) = 2x + 1, the slope is 2 — output rises 2 each time input rises 1.
  • Slope = rise ÷ run.

Key rule

Slope is the constant rate of change for a linear function.

Memory hook

How steep the line is.