Help please how to draw a tracked object path?

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C#

Hi everyone I'm done with tracking multiple objects based on color
but I want to fill the distance between its previous x,y and its current position but i don't know to do it


****I'm a beginner and learning so don't make fun of my code

What I have tried:

public void findObject(Bitmap image)
        {
            //BlobCounter blobCounter = new BlobCounter();
            blobCounter.MinWidth = blobCounter.MinHeight = 10;
            blobCounter.MaxWidth = blobCounter.MaxHeight = 40;
            blobCounter.FilterBlobs = true;
            blobCounter.ObjectsOrder = ObjectsOrder.XY;
            objectsData = image.LockBits(new Rectangle(0, 0, image.Width, image.Height), ImageLockMode.ReadWrite, image.PixelFormat);

            //Grayscale grayScaleFilter = new Grayscale(0.2125, 0.7154, 0.0721);
            grayScaleFilter = new Grayscale(0.2125, 0.7154, 0.0721);
            UnmanagedImage grayImage = grayScaleFilter.Apply(new UnmanagedImage(objectsData));
            image.UnlockBits(objectsData);


            blobCounter.ProcessImage(image);
            //Rectangle[] rects = blobCounter.GetObjectsRectangles();
            rects = blobCounter.GetObjectsRectangles();

            Blob[] blobs = blobCounter.GetObjectsInformation();
            pictureBox2.Image = image;
            PointF inp = new PointF(ix, iy);



            for (int i = 0; i < rects.Length; i++)
            {
                Rectangle objectRectangle = rects[i];
                objCount = i;

                Graphics g = pictureBox1.CreateGraphics();
                Graphics f = pictureBox1.CreateGraphics();
                Graphics s = pictureBox1.CreateGraphics();

                int objectX = objectRectangle.X;
                int objectY = objectRectangle.Y;

                ix = objectX;
                iy = objectY;

                objectsXY[i, 0] = objectX;
                objectsXY[i, 1] = objectY;

                Pen penx = new Pen(Color.Red);
                System.Drawing.Point[] points =
                    {
                    new System.Drawing.Point(objectX,objectY),
                    new System.Drawing.Point(objectsXY[i,0],objectsXY[i, 1]),


                };

              

                using (Pen pen = new Pen(Color.FromArgb(2, 227, 252), 2))
                {
                    g.DrawRectangle(pen, objectRectangle);
                    g.DrawString((i + 1).ToString(), new Font("Arial", 15), Brushes.Yellow, objectRectangle);
                    f.FillEllipse(Brushes.Black, objectRectangle.X, objectRectangle.Y, 5, 5);
                 //   s.DrawLine(Brushes.Red , PointF )
                }
}