Use the pen tool create a path stroke the path or use the brush tool set the tip size hardness and color. Click on point 1 move to point 2 Shift click move to point 3 shift click
Just i was looking for how to connection between two path point , and J Mack reply solved my problem , if someone know better way how connect between two point its ok ... Because i think there are better way to create line from x1 point to x3 point without brush, i want line Exactly identical to the point position...