https://www.khanacademy.org/math/class-8-bridge-course-mh/x32413ee700b4a348:direct-and-inverse-variation/x32413ee700b4a348:variation-problems/v/inverse-variation-word-problem-string-vibration-indian 2025-06-10T05:04:37.159828364Z Inverse variation word problem: string vibration Sal models a context about lengths of strings and the frequency of their vibrations! with an inverse variation equation. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (add course link here) Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Inverse variation word problem: string vibration Sal models a context about lengths of strings and the frequency of their vibrations! with an inverse variation equation. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (add course link here) Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by https://cdn.kastatic.org/ka-youtube-converted/PdiitmAd5uU.mp4/PdiitmAd5uU.mp4 282 Inverse Proportion https://www.khanacademy.org/math/algebra-home/alg-rational-expr-eq-func/alg-direct-and-inverse-variation/v/recognizing-direct-and-inverse-variation 2020-11-06T18:53:40Z Recognizing direct & inverse variation Sal gives many examples of two-variable equations where the variables vary directly, inversely, or neither. Sal Khan video https://cdn.kastatic.org/googleusercontent/vV0e0rb72IC_NH2QNpaNxGm96buKN8deIeu0-EvdR7KYV2EWHSuLSi-FWa0VZUbQZrd7JxaYEKM-ZaOxezxXUQUF Recognizing direct & inverse variation Sal gives many examples of two-variable equations where the variables vary directly, inversely, or neither. https://cdn.kastatic.org/ka-youtube-converted/3_DxJwDTbyQ.mp4/3_DxJwDTbyQ.mp4 425 Inverse Proportion https://www.khanacademy.org/math/algebra-home/alg-rational-expr-eq-func/alg-direct-and-inverse-variation/e/direct_and_inverse_variation 2025-02-18T07:52:09.551150445Z Recognize direct & inverse variation Given a few two-variable equations, find those that show direct or inverse variation. Tomer Gal exercise https://www.khanacademy.org/math/class-7-od/x48ac5f37f7da7ee1:applied-mathematics-odia-class-7/x48ac5f37f7da7ee1:variation-odia-class-7/v/applications-of-direct-inverse-proportion 2025-07-23T04:59:59.265635617Z Applications of Direct & Inverse proportion Want to finally make sense of work-time and speed-distance-time problems? This video starts by introducing the basic concept of work and time using simple, real-life situations. Then, it smoothly connects it to speed, distance, and time, helping you understand the formula and how to apply it. With step-by-step examples and relatable problems, you'll be able to tackle these topics with confidence! Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Applications of Direct & Inverse proportion Want to finally make sense of work-time and speed-distance-time problems? This video starts by introducing the basic concept of work and time using simple, real-life situations. Then, it smoothly connects it to speed, distance, and time, helping you understand the formula and how to apply it. With step-by-step examples and relatable problems, you'll be able to tackle these topics with confidence! https://cdn.kastatic.org/ka-youtube-converted/AO68U8YhDJo.mp4/AO68U8YhDJo.mp4 728 Inverse Proportion https://www.khanacademy.org/math/class-9-bridge-course-mh/x31106d01a69095e7:ratio-and-proportion/x31106d01a69095e7:proportion/e/commercial-math-7-b 2026-02-20T04:30:45.963786187Z Inverse proportion Commercial math ashish exercise https://www.khanacademy.org/math/ka-math-class-8-ncf/x5c620ccbb96453eb:proportional-reasoning-2/x5c620ccbb96453eb:inverse-proportion/e/direct-and-inverse-proportion-word-problems 2026-03-22T06:53:37.482695608Z Direct and Inverse Proportion Word Problems In this exercise, we will learn about the word problems on direct and inverse proportion. Khan Academy exercise https://www.khanacademy.org/math/ka-math-class-8-ncf/x5c620ccbb96453eb:proportional-reasoning-2/x5c620ccbb96453eb:inverse-proportion/e/compound-ratio 2026-03-22T06:53:37.482695608Z Compound Ratio In this exercise we will learn about the compound ratio. Two simple ratios are expressed like a single ratio as the ratio of product of antecedents to product of consequents and we call it Compund ratio of the given two simple ratios. a:b and c:d are any two ratios, then their compound ratio is a/b × c/d = ac / bd = i.e. ac : bd. Khan Academy exercise