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.

- 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.

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

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

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:

**Lesson 1 – Equations of Vertical & Horizontal Lines****Lesson 2 – Plotting Straight Line Graphs****Lesson 3 – Gradients****Lesson 4 – Equations of Straight Lines****Lesson 5 – Equations of Lines from Points****Lesson 7 – Interpreting Straight Line Graphs**

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:

**Lesson 1 – Equations of Vertical & Horizontal Lines****Lesson 2 – Plotting Straight Line Graphs****Lesson 3 – Gradients****Lesson 4 – Equations of Straight Lines****Lesson 5 – Sketching Straight Line Graphs****Lesson 6 – Equations of Lines from Points****Lesson 8 – Interpreting Straight Line Graphs****Lesson 9 – Equations of Parallel & Perpendicular Lines**