Every stage of the argument broken out, marked as you go, with the reason. What you can see is separated from what it means, and the working columns are shown to you.
A straight line isn’t the same claim as a proportionality, and the difference is the origin. Five sets of readings, including the same spring measured two ways, where one of the tables is proportional and the other isn’t.
At least six problems, then the ones you missed again. Your place is saved.