UNIT OVERVIEW

Graphs are visual ways to show relationships between numbers. You see them everywhere: temperature charts, growth graphs, maps with coordinates.

Example: You save R50 each week. A graph lets you see your savings grow, predict future savings, and understand the pattern at a glance.

In this unit, you will learn:

• What the Cartesian plane is and how to use it
• How to plot points using coordinates
• What linear graphs look like and how they behave
• How to find $x$-intercepts and $y$-intercepts
• What gradient (slope) means and how to calculate it
• How to draw graphs from equations
• How to find equations from graphs

Graphs turn numbers into pictures. Pictures are often easier to understand than tables of numbers.

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