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To factorise an equation you need to look for factors that all the elements of the equation (3x^2 and 15x) have in common. You can do this all at one or in steps, to start with you can see that both parts...

One of the limitations include cost, of setup, installation and maintenance. But more sublty there are undetermined envronmental implications, and issues with the energy storage and distribution due to th...

To anwser this question we need to find a linear equation of the form y=mx+c which we can rearrange to give the desired equation. Firstly, we must find the gradient at the point S given by dy/dx. Using th...

This question tests the student's knowledge on the topic of negative externalities while also inviting them to think of its application in the real world.

The buiding of a new airport is a common t...

This is a simple GCSE question which might feature at the beginning of the paper. It tests the student's attention to detail by asking to find the DIFFERENCE and not just the price that Sue paid. Also, gi...