As i wrote already: In a chart the elements on the X-axis are usually numbers or dates, and the elements on the Y-axis are usually doubles. We can define such a combination as following

public class Point<T>
{
public T X { get; set; }
public double Y { get; set; }
}


Here is a little helper function for creating line series that are used by the Silverlight Toolkit:

public LineSeries Create<T>(string title, Series<T> series, Func<t, double> f) where T : IComparable<T>
{
var points = series.Select(x => new Point<T> { X = x, Y = f(x) });

var lineSeries = new LineSeries
{
Title = title,
ItemsSource = points,
IndependentValuePath = "X",
DependentValuePath = "Y"
};

return lineSeries;
}


Given all this infrastructure we can easily draw the graph of a function:

public MainPage()
{
InitializeComponent();

var series = 0.To(100);

Func<int, double> multiplyByTwo = x => 2 * x;