This text book contains three units which contain useful ideas and resources when planning this topic.
Tasks in Unit 4: Linear graphs, beginning on page 37 of the pdf, require students to draw linear graphs using suitable technology and to read off where the graphs cross the axes, use the graphs to solve equations. In section C: Using linear graphs, students are required to use linear graphs to solve problems in a variety of contexts.
The activities in Unit 6: Simultaneous equations, beginning on page 57 of the pdf, looks at problems which can be solved by forming and solving simultaneous equations. Section C: Using graphs explains how graphs can be used to solve the problems outlined in the first section.
The content of Unit 9: Graphs covers the drawing and use of non-linear graphs. Section B: Graphs from equations, beginning on page 90 of the pdf, requires students to plot the graphs of quadratic equations and use the graphs to solve quadratic equations.