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If y varies directly with x, and if y = 14 when x = -14, how do you find the direct variation equation?

1 Answer

Apr 3, 2018

$y = - x$ $y=-x$

Explanation:

$y = k x$ $y=kx$ is the equation put $y = 14$ $y=14$ and $x = - 14$ $x=-14$ to find $k$ $k$

$14 = k$ $14=k$ $\times$ $xx$ -14

$k = \frac{14}{- 14}$ $k=14/-14$ $k = - 1$ $k=-1$

So $y = k x$ $y=kx$ becomes $y = - x$ $y=-x$

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