How do you find the constant of variation for a direct variation that includes the given values (2,4)?

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How do you find the constant of variation for a direct variation that includes the given values (2,4)?

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Answer 1 · 2017-08-05T09:54:55

$k = 2$ $k=2$

Explanation:

$for 2 quantities (x, y) to be in direct variation then$ $"for 2 quantities "(x,y)" to be in direct variation then"$

$∙ x y = k x \leftarrow k is the constant of variation$ $•color(white)(x)y=kxlarr" k is the constant of variation"$

$to find k use the given condition (2, 4)$ $"to find k use the given condition " (2,4)$

$y = k x \Rightarrow k = \frac{y}{x} = \frac{4}{2} = 2$ $y=kxrArrk=y/x=4/2=2$

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How do you find the constant of variation for a direct variation that includes the given values (2,4)?

1 Answer

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