What is the beta of the supply of omega

Question

the rate of profit for the load of Omega Electronics and available portfolio for 6 periods has been as per the following : 

Period          Return on the stock      Return on the 

of Omega Electronics      market portfolio 

(%)          (%) 

1      18%          15% 

2      10%          12% 

3      - 5%      5% 

4      20%          14% 

5      9%      - 2% 

6      18%          16% 

(i)What is the beta of the supply of Omega Electronics? 

(ii) Establish the trademark line for the supply of Omega Electronics.