Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to ...

Learn and revise how to plot coordinates and create straight line graphs to show the relationship between two variables with GCSE Bitesize Edexcel Maths.

Grid reference, distance and scale are key features of map reading. Learn how to use these skills in this guide for students aged 11 to 14 from BBC Bitesize.