public void GetXTermsMatrixTest() { //data for y = -7x +2xx QuadraticFitThruZero target = new QuadraticFitThruZero(); target.Points.Add(new DPoint(0, 0)); target.Points.Add(new DPoint(1, -5)); target.Points.Add(new DPoint(2, -6)); target.Points.Add(new DPoint(3, -3)); target.Points.Add(new DPoint(4, 4)); target.Points.Add(new DPoint(5, 15)); Matrix expected = new Matrix(new double[,]{ {0,0}, {1,1}, {2,4}, {3,9}, {4,16}, {5,25}}); Matrix actual = target.GetXTermsMatrix(); Assert.AreEqual(expected, actual); }