I have been a teacher for over 20 years - all the stuff I upload has been tried and tested in my classroom. I don't mind a discussion on Twitter too where I also share new resources. I now have a personal website: https://andylutwyche.com/
This is a great GCSE activity in which students match each equation to its gradient, y-interceptor and the co-ordinate on it. I wrote this in order to get across the idea of y=mx+c plus the fact that it describes the link between the x and y co-ordinates.