Equations of direct and inverse proportion - BBC Bitesize
...Watch this video to learn about equations of direct and inverse proportion, with worked examples....
https://www.bbc.co.uk/bitesize/articles/zp9fkhv
Inverse Proportion Formula - GCSE Maths - Steps & Examples
...If the variables were x and y where y is inversely proportional to x, we can write the relationship using the proportionality symbol as. y\propto \frac {1} {x}. If y is inversely proportional to x, the constant of proportionality k=xy. Rearranging this equation to make y the subject, we have. y=\frac {k} {x}....
https://thirdspacelearning.com/gcse-maths/ratio-and-proportion/inverse-proportion-formula/
Inverse Proportion | Edexcel IGCSE Maths A Revision Notes 2016
...Revision notes on Inverse Proportion for the Edexcel IGCSE Maths A syllabus, written by the Maths experts at Save My Exams....
https://www.savemyexams.com/igcse/maths/edexcel/a/18/higher/revision-notes/1-numbers-and-the-number-system/direct-and-inverse-proportion/inverse-proportion/
3.1 F) Inverse Proportion ? Proportion ? AQA GCSE Maths Higher
...Similar to direct proportion questions, the first step in answering inverse proportion questions is to form an equation for the variables involved. This is the case even if we are not asked to form an equation for the variables....
https://www.elevise.co.uk/g-a-m-h-31-f.html
Inverse Proportion - Formula, Examples, Definition, Graph
...Taking speed as y and time as x, we can say that y is said to be inversely proportional to x and is written mathematically as inverse proportion formula. The inverse proportional formula is written as. y = k/x. where. k is the constant of proportionality. y increases as x decreases. y decreases as x increases....
https://www.cuemath.com/commercial-math/inverse-proportion/
Directly Proportional and Inversely Proportional - Math is Fun
...This: y is inversely proportional to x. Is the same thing as: y is directly proportional to 1/x. Which can be written: y = k x. Example: 4 people can paint a fence in 3 hours. How long will it take 6 people to paint it? It is an Inverse Proportion: As the number of people goes up, the painting time goes down....
https://www.mathsisfun.com/algebra/directly-inversely-proportional.html
Inverse Proportion - Maths: Edexcel A Level Pure Maths - Seneca
...We want to know the days taken for 4 builders to build the wall. Two variables are inversely proportional to one another if the size of one variable decreases when the size of other increases....
https://senecalearning.com/en-GB/revision-notes/a-level/maths/edexcel/pure-maths/2-5-10-inverse-proportion
Direct and inverse proportion - Direct and inverse proportion - BBC
...Inverse proportion occurs when one value increases and the other decreases. For example, more workers on a job would reduce the time to complete the task. They are inversely proportional....
https://www.bbc.co.uk/bitesize/guides/zqd6srd/revision/3
Inverse Proportion - GCSE Maths - Steps, Examples & Worksheet
...If it is inversely proportional to x, we write this relationship as y\propto\frac {1} {x}. This relationship can be described using an equivalence relationship....
https://thirdspacelearning.com/gcse-maths/ratio-and-proportion/inverse-proportion/
Finding the constant of proportionality for inverse proportion
...For all direct and inverse proportions, the multiplicative relationship is with x and y. The multiplicative relationship whether direct or inverse can be shown as y and x^n....
https://www.thenational.academy/teachers/programmes/maths-secondary-ks4-higher/units/direct-and-inverse-proportion/lessons/finding-the-constant-of-proportionality-for-inverse-proportion