Flashcards for Edexcel AS Level Maths Straight Line Graphs, covering the key formulae, methods and definitions you need to recall for Paper 1 and Paper 2. 1 card drawn from 5.1 y = mx + c, 5.2 Equations of Straight Lines, 5.3 Parallel and Perpendicular Lines, 5.4 Length and Area, and 5.5 Modelling with Straight Lines, matched to the Edexcel AS Level Maths (8MA0) specification.