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Parallel and Perpendicular Lines
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Reading straight lines

Reading straight lines

Coordinate grid with two parallel lines of gradient 2 and a perpendicular line of gradient minus one half, with a right angle marked

Most straight-line questions become easier when the equation is written as y=mx+cy = mx + cy=mx+c. Here, mmm is the gradient, which tells you how steep the line is, and ccc is the yyy-intercept, so the line crosses the yyy-axis at (0,c)(0, c)(0,c).

Parallel and Perpendicular Lines Lesson

  1. IGCSE
  2. /Maths
  3. /Parallel and Perpendicular Lines

Step-by-step lessons on Edexcel IGCSE Maths Parallel and Perpendicular Lines. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons