function in rstudio

I think that should be a lm function not 1m.

Also, welcome to Posit forum! In future, I would really encourage you to review the following guide, FAQ: Tips for writing R-related questions. For example, the guide emphasizes asking coding questions with formatted code-chunks and a reprex, which would make it easier for people who want to help you to pick up your issue and attempt to run with a solution.