Find the Equation that Relates x and y x = 9 x = 9 , y = 10 y = 10 When two variable quantities have a constant ratio, their relationship is called a direct variation. It is said that one variable varies
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To tell if an equation is a direct variation, look for the form y = kx. In particular, this means: There are only two variables (in our examples, we use x and y for our two variables). The only
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Step-by-step explanation: Direct variation is represented as y = kx, where k is a constant. We can rewrite y - x = 0 as y = x (add x to both sides) This can be looked at as y =
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1. Tell whether x and y show direct variation, Inverse variation, or neither. Explain. 2. The variables and y vary inversely. Use the given values to write an equation relating and y. Then find y when
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We say y varies directly with x (or as x , in some textbooks) if: y = k x. for some constant k , called the constant of variation or constant of proportionality . (Some textbooks
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