Revise how to recognise and determine the equation of a quadratic function from its graph with our guide. Back to top. More on Quizzes - National 5 Maths. Find out more by working through a topic.

At the point (or points) where two graphs intersect, the \(x\) and \(y\) values are the same for both functions. We use this information to find the solution to simultaneous linear equations.