Simultaneous Equations on Graphs – Edexcel IAL Pure 1 (Chapter 3.3) – Complete Lesson

A complete lesson linking simultaneous equations to graphs, for Edexcel IAL Pure Mathematics 1 (Chapter 3).

A “Spot the clue” slide teaches students that two equations or graphs plus any word like intersect, meet, cross or touch means simultaneous equations. Students then read solutions from a graph and find where a line meets a curve. They use the discriminant to decide whether the line meets the curve twice, once (a tangent) or not at all.

Includes (16 slides):

Learning objectives and a starter
The “Spot the clue” slide
Graphs showing two, one and no intersections
Four worked examples, including finding k for a tangent
Common mistakes
Eight practice questions with answers
An exam-style tangent question with a mark scheme
A plenary

Links to Exercise 3C. Editable PowerPoint, from Mr Edine Maths.