I don't think it will become apparent unless we get a point 4 to print on the chart. This will then let us determine the 2-4 line and therefore the 3-5' line (currently the dashed blue lines - assumed).
The dashed green 1-4 line is also assumed as we need that fourth point to complete the convergent lines and see a declining .
Time will tell my friends. If you have any advice, comments or amazing abilities (looking at you 4xForecaster) please chime in.