B.1 Function Foundations
Equations of straight lines (forms, gradient, parallel and perpendicular); the concept of a function with domain, range, and notation; sketching and interpreting graphs; key features (intercepts, max/min, asymptotes, intersections); composite, identity, and inverse functions.
Equations of a straight lineSign up
Straight-line equations — forms, gradient, parallel and perpendicular
Concept of a function — domain, range, notationSign up
Function definition, notation, and domain/range
Graph of a functionSign up
Sketching and interpreting a function graph
Key features of graphs and intersectionsSign up
Intercepts, max/min, asymptotes, intersections
Composite, identity, and inverse functionsSign up
Composite functions and the identity function · Inverse functions — find and graph as reflection in y = x