B.1 Functions
The modelling toolkit. Linear equations and gradients; functions, domain, range, inverse. GDC graphing — setting a window, reading intercepts, extrema, asymptotes, and intersection points. Choosing and fitting a model family (linear, quadratic, exponential, cubic, sinusoidal, direct/inverse variation), then applying the full modelling cycle of fit, test, predict, and refine — including extrapolation hazards.
Lines and FunctionsSign up
Linear Equations and Parallel/Perpendicular Lines · Function Notation, Domain, Range, Inverse
Graphing with TechnologySign up
Setting an Appropriate Window on a GDC · Reading Key Features and Solving by Intersection
Choosing a ModelSign up
Choosing and Fitting a Model · Direct vs Inverse Variation
The Modelling ProcessSign up
Fit, Test, Refine — the Modelling Cycle · Extrapolation — When the Model Stops Working