Proportion
Bayani Gaba-gaba
Two quantities are in proportion when they grow or shrink together in a fixed way. Double the recipe and you double every ingredient; share a job among more workers and it takes less time each. Recognising and writing these relationships lets you predict one quantity from another with a single constant.
In this lesson you will express direct and inverse proportion in algebra, find the constant of proportionality and use it to find unknown values. You will also learn to look at a table of data and decide which model fits best, whether the link is direct, inverse, or based on a square.
Manufura
- Express direct and inverse proportion in algebraic terms and use this form of expression to find unknown quantities.
- Identify the best variation model for given data.
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Nazarin Darasi
Barka da kammala darasi akan Proportion. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- y is directly proportional to x, and y = 12 when x = 3. What is y when x = 5? A. 15 B. 20 C. 24 D. 60 Answer: B
- y is inversely proportional to x, and y = 6 when x = 2. What is y when x = 4? A. 2 B. 3 C. 8 D. 12 Answer: B
- For a direct proportion y = kx, which quantity stays constant? A. x y B. y/x C. y/x^2 D. x + y Answer: B
- For data with x: 1, 2, 3 and y: 3, 12, 27, which model fits? A. y = 3x B. y = 3/x C. y = 3x^2 D. y = x + 2 Answer: C
- Which describes inverse proportion? A. y increases as x increases at a constant rate B. y decreases as x increases, with xy constant C. y equals x squared D. y is always equal to x Answer: B
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Use Direct and Inverse Variation
Solve direct variation problems
"Elementary Algebra: Use Direct and Inverse Variation" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/elementary-algebra/pages/8-9-use-direct-and-inverse-variation. Access for free at https://openstax.org/books/elementary-algebra/pages/1-introduction
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