# 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?

• 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: