Answer:
Hello,
Please check out this video for help!
It'd be best in the future to learn about the topic.
So when you go back to In-School, You won't have a problem!
This video should help!
https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:solve-equations-inequalities/x2f8bb11595b61c86:num-solutions-linear-equations/v/number-of-solutions-to-linear-equations
--------
Please tell me if it does not cover your question(s)!