How to use Input.GetAxis for character movement?

Hi all
I have a simple character controller that moves my character in 4 directions using input.GetAxis just fine but I am having a really difficult time figuring out how to access it for use in say an if statement.
I know that using GetKey I could use something like the following and then easily add more logic into it, and set up specific logic for left right up and down.

void Update () {
	if (Input.GetKey(KeyCode.RightArrow)){
		transform.position += Vector3.right * speed;}

How would I do this using GetAxis?
By the way I decided on a controller that uses input.GetAxis so that I could use a rigidbody to be able to use the physics engine later on in case anyone was wondering.
Here is my relevant code, Thank you so much in advance!

public Vector2 speed = new Vector2 (50, 50);
private Vector2 movement;
private Rigidbody2D playerRigid;

void Start ()
{
	playerRigid = GetComponent<Rigidbody2D> ();
}

void Update ()
{
	float inputX = Input.GetAxis ("Horizontal");
	float inputY = Input.GetAxis ("Vertical");

	movement = new Vector2 (
		speed.x * inputX,
		speed.y * inputY);

}
void FixedUpdate ()
{
	playerRigid.velocity = movement;
}

you mean like this?

if (movement.x < 0f) {
	Debug.Log ("left");
} else if (movement.x > 0f) {
	Debug.Log ("right");
} 
		
if (movement.y < 0f) {
	Debug.Log ("down");
} else if (movement.y > 0f) {
	Debug.Log ("up");
}