Graphs - WJEC Direct and inverse proportion Graphs can be used to present data clearly and as a tool to aid calculations in the form of conversion graphs and travel graphs.

The unlikely winner of the 2010s The most interesting thing about these two inverse volatility ETFs is that they were largely an afterthought when volatility-tracking investments first became popular.

The unlikely winner of the 2010s The most interesting thing about these two inverse volatility ETFs is that they were largely an afterthought when volatility-tracking investments first became popular.

Learn about and revise ratio, proportion and rates of change with this BBC Bitesize GCSE Maths Edexcel study guide.