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GF.15.3

Show if lines are parallel

Show whether straight lines are parallel (rearranging equations where necessary)

3 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 5–7 Core 🇬🇧 UK

Equations of Parallel Lines - GCSE Maths

1st Class Maths 114K views

Clear UK method for using gradients to prove two straight lines are parallel, with exam examples.

Jump to 0:26The link between parallel lines and gradients 0:52Example showing 2 lines are parallel 2:12Second Example 3:16Example showing lines are parallel between coordinates 5:13Second Example

Grade 5–7 Core 🇬🇧 UK

Show that two lines are parallel. GCSE 9-1 Maths Edexcel June 2017 Paper 1H Q6

Doctor Jem 11K views

Worked Edexcel exam question showing how to prove two lines are parallel using gradients.

Grade 5–7 Core 🇬🇧 UK

GCSE Maths - Parallel Lines (2026/27 exams)

Cognito 87K views

Explains parallel lines via y=mx+c, rearranging equations first, then finding a parallel line.

Jump to 0:00Intro: What are Parallel Lines?0:15Gradient and the Equation y = mx + c 0:52Checking the Equation Format 1:55Finding the Equation of a Parallel Line (Exam Question Example)2:28Finding the Gradient