In this deck, we'll learn how to find the equation of a straight line. This is a fundamental skill in algebra and geometry. We'll focus on the most common form of a line's equation, and how to use information like a point on the line, or its steepness, to define it precisely.

The equation of a straight line is most often written in the form y equals m x plus c. This is a powerful formula because it tells you everything you need to know about the line. The two important parts are 'm' and 'c'.

The gradient, 'm', tells you the steepness of the line. A large positive gradient means a very steep upward slope, while a negative gradient means the line slopes downwards. The y-intercept, 'c', tells you the exact point where the line crosses the vertical y-axis.