This video is all about how to prove the equation of a straight line.
x – 2y =10, is a tangent to the circle x^2 + y^2 =20. (xsquared + ysquared = 20).
The question might be on a GCSE maths non calculator paper and is around grade 7+ so it can be a little tricky.
It’s useful to draw the question first to try to understand what they are asking 🙂
These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar. Please do stop the video, try the question and compare your solution!
I hope the video helps and please do leave a comment – thanks!
Watch on YouTube
I hope it becomes a little clearer as you work through the quick test videos, before moving on to the higher levels. They do take a bit of a leap forward, although should be OK if you have viewed the earlier ones.
If you would like to find out more try these!
Please do leave a comment below if you are not sure. Alternately you can view my YouTube channel and leave a comment there – I’ll always try to respond as quickly as possible.