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x^2 + y^2 = 9

x + y = 2 

1) Firstly look at the second equation which is the simplest and think how you can rearrange it to fit into the first equation:

Poem analysis has several dimensions to it all of which you need to address in order to write an answer worthy of the top marking band.

The first time you read through the essay try to do...

Source analysis in GCSE history exams can be exceedingly tricky and it is very easy to miss out on the top marks because of a phrase or observation that the marking scheme deems as lower tier.

The introduction is the most important part of your entire essay as examiners will have already decided once they've read it which marking band they feel you belong in. As such your introduction needs ...

(1) 5x + 2y = 20(2) x + 4y = 13Step 1: Eliminate x or y. We do this but making either the x or y terms the same, in this example, I will make the y terms the same, by multiplying the first equation by 2.(...