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Equation of a circle  ->  (x-a)² + (y-b)^2 = r²     where the centre = (a,b) and the radius = r

Thus using the equation above we can conclude that the centre is (2,-5)

The objective of the question is to find an answer to x = ?, where ? is a number.

Start by 'moving' all the x's to one side of the equals sign and all the numbers to the other. This can be done by ...

1. Red blood cells are shaped like a biconcave disc - increases SA:volume ration -> increase surface for oxygen to diffuse in and out of cell

2. Red blood cells are very small - 7...

It is crucial to know and recognise the text type conventions - they are the basis in Paper 2. There is much guidance in the syllabus and online, however, when explained in person with examples it becomes...

My father is tall. Mon père est grand. At school I like maths and science. A l'école, j'aime les mathématiques et les sciences. I listen to music in the evening.<...