Here is information that will help you to answer this question on your own.
1) Author- Taking into consideration the author of the website is a way to determine bias. For example, if the website/article is created by a person who is a well known advocate for a specific political party, you can assume that they have a bias.
2) Sources- The sources that a website uses are critical to determine whether or not it is bias. If the website only cites other sources with a similar view, you can assume their is some bias.
3) Source of funding- If a website is sponsored by an organization, there is most likely bias. This is because without funding, many websites would not exist.
