This is the first video in the series relating to Linear relations and modelling for the Year 11 General Maths Units 1 and 2 course. Algebra is really important and it's clear it's going to be needed for much of the work both in Units 1 and 2 but Units 3 and 4 too. This series of videos will look at a number of algebra concepts. The first is how we can substitute values into a formula and construct a table of values. There are lots of worked examples and the theory is explained in an easy to understand way.