How to Inverse a line

I have a line that goes to the mouse position to show the way you will go but when I try to inverse it so it looks as if your pulling it does not work I don't know what to try now

  public void DrawLine()
  {
      //Putting the start of the line on player
      startPos = transform.position;
      startPos.z = 1;
      lineRend.SetPosition(0, startPos);
      if(!started)
      {
          //Putting both lines to player at the start
         lineRend.SetPosition(1, startPos);
      }
      if (Input.GetMouseButton(0))
      {
          //Moving the end of the line to the mouse position
          lineRend.enabled = true;
          moveTo = Camera.main.ScreenToWorldPoint(Input.mousePosition);
          moveTo.z = 1;
          lineRend.SetPosition(1, moveTo);
      }
      if (Input.GetMouseButtonUp(0))
      {
          lineRend.SetPosition(1, startPos);
 
          lineRend.enabled = false;
      }
  }