text{change in x}}\) Gradients can be ... To work out the equation of a line from a graph, find the gradient and the \(y\)-intercept. The gradient is the same all along the line, so it doesn ...

text{change in x}}\) Using the points (0 ... Petrol costs £1.15 per litre. The graph crosses the vertical axis at (0, 0). This is known as the intercept. It shows that if you buy 0 litres ...