Using line renderer with 2D Raycasts

Hi, I'm currently making a puzzle in which light bounces off of mirrors and has to reach an end point to finish the level. I have the raycasting sorted, it'll bounce off of the required object and reflect appropriately. I can't figure out how to implement the LineRenderer alongside my code.

Here's the class I'm using for the raycasting(laser)

 using UnityEngine;
 using System.Collections;
 
 public class LightRefraction : MonoBehaviour 
 {
     //private LineRenderer lineRenderer;
 
     // Use this for initialization
     void Start () 
     {
         //lineRenderer = GetComponent<LineRenderer>();
     }
     
     // Update is called once per frame
     void Update () 
     {
         Laser();
     }
 
     public void Laser()
     {
         Debug.DrawRay(transform.position, -transform.up * 50, Color.black);
         RaycastHit2D hit = Physics2D.Raycast(transform.position, -transform.up, Mathf.Infinity);
 
         if( hit != null && hit.collider != null)
         {
             Vector3 inDirection = Vector3.Reflect(-transform.up, hit.normal);
 
             Debug.DrawRay(hit.point, inDirection * 100, Color.red);
             hit = Physics2D.Raycast(hit.point + hit.normal * 0.01f, inDirection, Mathf.Infinity);
 
 
             if (hit != null && hit.collider != null)
             {
                 inDirection = Vector3.Reflect(inDirection, hit.normal);
                 Debug.DrawRay(hit.point, inDirection * 100, Color.green);
 
                 hit = Physics2D.Raycast(hit.point + hit.normal * 0.01f, inDirection, Mathf.Infinity);
 
 
                 if(hit != null && hit.collider != null)
                 {
                     inDirection = Vector3.Reflect(inDirection, hit.normal);
                     Debug.DrawRay(hit.point, inDirection * 100, Color.blue);
                 }
             }
 
         }
     }
     
 }
 

Any help with setting up the LineRenderer to draw the lines the Debug.DrawRay() is drawing would be much appreciated.

Thanks, Matthew