Unit 3
Slope, Rate of Change & Linear Equations
The shared spine of both exams: slope as unit rate, y = mx + b, and constructing linear models. Taught once, assessed on both tests.
Essential question: What does a constant rate of change look like in a table, graph, and equation?
Slope and Rate of Change
Both examsSlope m = (y₂ − y₁)/(x₂ − x₁) is the constant rate of change of a linear function and the unit rate of a proportional graph.
NY-8.EE.5 · NY-8.EE.6 · AI-F.IF.6
Multiple Representations of Linear Functions
Both examsA linear function can be a table, a graph, a verbal description, or an equation. All four must tell the same story.
NY-8.F.3 · NY-8.F.4 · AI-F.LE.2