Ways to move an object in 2D

I found some ways to move an GameObject in the 2D enviroment.

1. First, I get the Input from the Keyboard or the Mouse:
   
   float direction = Input.GetAxis("Horizontal");
   float direction = Input.GetAxis("Mouse X");
   
   Both returns values between -1 and 1, depending on the direction.
2. I get the actual position of the object
   
   Vector3 posAtual = transform.position;
3. Move it!
   
   # Changing the X of the vetor
   transform.position = new Vector3(posAtual.x + (velocity * mouseDir * Time.deltaTime), posAtual.y, posAtual.z);
   
   # Adding a new vetor to the actual position vector
   transform.position += new Vector3(velocity * direction * Time.deltaTime, 0, 0);
   
   # Adding a vector by direction
   transform.position += transform.right * velocity * direction * Time.deltaTime;
   
   # Following the mouse
   Vector3 temp = Input.mousePosition;
   temp.z = 10;
   transform.position = new Vector3(Camera.main.ScreenToWorldPoint(temp).x, posAtual.y, posAtual.z);
   
   # Adding Force
   rb.AddForce(transform.right * force * direction);
   
   # Using the Tranform method "Transalte"
   transform.Translate(velocity * direction * Time.deltaTime, 0, 0);