Below is the graph of a quadratic function, showing where the function is increasing and decreasing. If we draw in the tangents to the curve, you will notice that if the gradient of the tangent is ...

Calculating percentage increase is an important skill for geographers to have. When geographers collect data over a period of time the results may increase. Calculating a percentage increase allows a ...

Relative child poverty has increased for three consecutive years and now stands at 4.1 million, or 30% of children. Our verdict Correct, looking at relative poverty after housing costs. Over the long ...