Flashcards for Edexcel A Level Maths Straight Line Graphs, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 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 A Level Maths (9MA0) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.