How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

Features of linear graphs. Linear graphs are straight-line graphs that visually represent a constant rate of change in the relationship between two variables, showing how one changes in response to ...

Solving quadratic equations - Eduqas 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.

For example, we can call either of the overloaded versions of the addFunction() method to add more than one function to a graph. Listing 9 shows how to add three functions, each with different colors.

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.