Graphs of quadratic functions can be used to solve equations. Example. Draw the graph of \ ... Example. Using the graph from the previous example to solve the equation \(2x^{2} ...

Solving quadratic equations - Edexcel Graphs of quadratic functions. ... Example. Draw the graph of \(y = x^2 -x – 4 \) and use it to find the roots of the equation to 1 decimal place.

You can also plot graphs for trigonometric equations (equations that use sine, cosine, and tan, etc.), establish graphs for linear and quadratic inequalities, and even plot graphs for various ...