Graphs & Equations of the Form ax + by = c – Complete Lesson

This is a complete lesson on graphs and equations of the form ax + by = c that looks at how to find an equation of this form from a graph, or how to plot a graph from an equation given in this form. The lesson is designed with the new GCSE specification in mind.

Lesson Objectives

  • To plot and draw graphs of equations in the form ax + by = c.
  • To find the equation of a straight line from a graph in the form ax + by = c.

Who is this Lesson For?

This pack is designed for GCSE higher or foundation tier students. It could also be used with Key Stage 3 students.

What is Included?

Included in this download are the following:

  • Full lesson plan for the ‘Graphs & Equations of the Form ax + by = c’ lesson, including introduction, teaching content, individual activities, plenary and suggested support and extension activities
  • Introduction Activity
  • ax + by = c Example
  • Blank Grid
  • Mini-Plenary
  • Student Worksheet on Graphs & Equations of the Form ax + by = c
  • Match Cards
  • Straight Line Graphs Fact Sheet
  • Complete Solutions to all Questions

Lesson Progression

This is the sixth lesson in the ‘Real Life Graphs’ unit of work (foundation tier) and also the seventh lesson in the ‘Linear Graphs & Coordinate Geometry’ unit of work (higher tier).

The Straight Line Graphs unit is available as a pack including homework activities and a unit assessment. The other lessons in the unit are:

The Linear Graphs & Coordinate Geometry unit is also available as a pack with homework activities and a unit assessment. The other lessons in this unit are: