Create a Panel on your form, and handle it's Paint event.
In the event handler, the second parameter includes a Graphics property, which allows you to draw on the panel surface.
Then it's just a case of calling DrawLine
Graphics g = e.Graphics;
g.DrawLine(Pens.Black, new PointF(-23.68F, 0.09F), new PointF(-23.67F, 0.76F));
g.DrawLine(Pens.Black, new PointF(-23.67F, 0.76F), new PointF(-23.66F, 1.43F));
You may have to play with scaling and / or center points in order to see your data though, as Windows coordinates start with (0, 0) at teh top left corner, and increase down and right.