Video 2 2 Direct Variation For Algebra 2 Youtube
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Algebra 2 2 2 Direct Variation Problem 3 Using A Proportion To S Freemathvideos in this video i will show you how to use direct variation to help determine the missing variable, as well as how to determine i. Word problems? ugh. enter the world of yay math which we break down these kinds of variation problems to that relieving phrase, "oh, it's not that bad " no.
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Direct Variation Explainedвђ Definition Equation Examples вђ Mashup Math It could be y is equal to 2 times 1 x, which is clearly the same thing as 2 x. it could be y is equal to 1 3 times 1 x, which is the same thing as 1 over 3x. it could be y is equal to negative 2 over x. and let's explore this, the inverse variation, the same way that we explored the direct variation. Virtual nerd's patent pending tutorial system provides in context information, hints, and links to supporting tutorials, synchronized with videos, each 3 to 7 minutes long. Well, a good example is speed and distance. the bigger your speed, the farther you'll go over a given time period. so as one variable goes up, the other goes up too, and that's the idea of direct proportionality. but you can express direct proportionality using equations, and that's an important thing to do in algebra. If you add a y intercept and change y=2x to, for example, y=2x 2, the x and the y will no longer be related by a constant ratio. if x is 1, y will be 4. if x is 2, y will be 6. though x has increased by a factor of 2, y has not. therefore, y=2x 2 is not direct variation. the same goes for inverse variation.
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