Is the equation $y=x-2$ a direct variation? If it is, how do you find the constant of variation?

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Answer 1 · 2017-05-20T16:37:45

$y = x-2$ is not a direct variation.

A direct variation means that $y$ is proportional to $x$ . In other words, they are equations of the form $y = kx$ where $k$ is a constant value.

$y = x-2$ is not of the form $y=kx$ , so it is not a direct variation.

Is the equation y=x-2y=x-2 a direct variation? If it is, how do you find the constant of variation?