#GCSE #Proportion
This video is a quick reminder of direct and inverse proportion for GCSE maths, and is aimed at around grade 5. You can download the worksheet from 3minutemaths.co.uk, although please do
- stop the video
- work through the questions
- compare your solutions
Here's the link: [ Ссылка ]

I hope the video helps and please do leave a comment - thanks!

Here's the questions:
1. Two variables are connected by the relationship y x. When x = 0.2, y = 1.8.
a. Write a formula for y in terms of x
b. Work out y when x = 0.16
c. Work out x when y = 29
2. The cost of petrol for a journey is directly proportional to the distance travelled. Joe travels 130 miles and spends £15 on petrol. Calculate
a. The cost of petrol for a journey of 190 miles
b. The length of a journey costing £12.75
3. A is inversely proportional to B. When A = 4, B = 6
a. Write a formula for A in terms of B
b. Calculate B when A = 12
c. Calculate A when B = 0.4

Here's the timestamp:
0:00 Intro
1:05 Direct proportionality
3:32 Direct proportionality
6:39 Inverse proportionality


Join this channel to get access to get your name mentioned in a maths problem!
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Visit @3minutemaths for a full range of quick reminder and GCSE maths walkthrough videos.

HERE'S SOME PLAYLISTS THAT MIGHT BE USEFUL:
🚀 Edexcel Higher November 2018 Paper 1 walkthrough - [ Ссылка ]
🎓 Edexcel Higher June 2018 Paper 2 - [ Ссылка ]
📚 AQA Higher June 2018 Paper 3 - [ Ссылка ]
📝 Edexcel Foundation June 2018 Paper 1 - [ Ссылка ]
📔 Edexcel Foundation November 2018 paper 2 - [ Ссылка ]
📓 AQA Foundation Specimen Paper 2 - [ Ссылка ]

... AND HERE'S SOME POPULAR TOPIC VIDEOS AIMED AT AROUND GRADE 5:
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MOST OF THE VIDEOS & QUESTION PAPERS HAVE BEEN POSTED TO:
🌍 My website / blog - [ Ссылка ]

​Visit [ Ссылка ] for quick reminder High School GCSE mathematics videos - or subscribe to the channel. You can download the questions from [ Ссылка ] - along with many others aiming to offer quick reminders of the key topics.




My new course ‘How to good at mathematics - and great at fractions! is now live on Udemy: [ Ссылка ]
or click here for a limited 50% discount!:

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The course contains around 3 hours of video, quizzes and a copy of my book 'How to get an A in maths.' All the way through to GCSE and just in time for revision.

Subscribe to Simon Deacon maths for more great math videos [ Ссылка ]

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‘How to get an A in maths’ is now available on Amazon and packed full of hints, tips and techniques to help you get the very best from your studies. Or, first chapter FREE on my website [ Ссылка ] - real maths, tips and techniques.

[ Ссылка ] is full GCSE past papers, questions by topic and hints and tips to help you get the very best from your studies.

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