public void TestGetIntersect()
{
var r = new LinearEquation(0.75, 1.25);
//the line determined by points p & q
var ln = new LinearEquation(-1.333333, 1.666667);
var intesect = ln.GetIntersect(r);
Console.WriteLine(intesect);
Assert.IsTrue(new LinearEquation(0.2, 1.4).Equals(intesect));
}