GCSE Edexcel Straight line graphs - Edexcel Parallel and perpendicular lines Graphs show the relationship between two variables and are often seen in newspapers and the media. People who work in ...

Parallel lines are a fixed distance apart and will never meet, no matter how long they are extended. Lines that are parallel have the same gradient. The graphs above, \(y = 2x + 1\) and \(y = 2x ...