Higher; Circles and graphs Further examples on intersections. The equation of a circle can be found using the centre and radius. The discriminant can determine the nature of intersections between ...

Just how do historians find out about the past? It can be challenging to demonstrate this in a concrete, practical way, but add some broken pieces of pottery, costume jewellery and soil to a ...

Part of Maths Numeracy (WJEC) ... Example graphs: Calculations. British motorist: 400 km = 250 miles, 27 litres = 6 gallons. Fuel consumption in MPG = 250 ÷ 6 = 41.67 MPG (to two decimal places).