Modelling a Test Drive
This resource from the Nuffield Foundation provides the opportunity for students to fit functions to linear and quadratic graphs. It is assumed that students will already have some knowledge of linear and quadratic functions and their graphs, which are used to compare models and comment on their suitability. A slide show is included, which can be used to introduce the activities, and data for speed and braking is provided in an Excel spreadsheet. The first question on the student sheet requires students to find a linear function using the intercept and gradient of a linear graph. For later questions they need to be able to recognise the shape of quadratic curves, and know how to solve simultaneous equations.