Do you have to remember algebra 1 to do good in algebra 2?

To do WELL in Algebra 2, you will need to remember part of Algebra 1. However, your teacher should go over part of Algebra 1. I did poorly in Algebra 1, though Algebra 2 now makes sense to me simply because I needed to understand it to understand Algebra 2, and I was able to infer the things that I was unsure of.