How do we know if a graph represents either direct or inverse proportionality? We look for certain features of the graph and perform some test calculations to help us decide. Look at this graph: The ...

Designed by a teacher who has been a GCSE Hod and worked at a Grammar School. 10 years teaching experience. Not proportionality in tables. Solve problems involving direct proportion given values.

In this graph, 𝑥 and 𝑦 are directly proportional. This means that when 𝑥 doubles, 𝑦 also doubles, and when 𝑥 triples, so does 𝑦. In fact, for all coordinates on this line, you could multiply or ...

Understand the gradient of a line as the rate of change of two variables and calculate rates of changes. A bundle is a package of resources grouped together to teach a particular topic, or a series of ...