How do you know if an equation $6 x - 5 y = 4$ $6x-5y=4$ is a direct variation And if it is how do you find the constant of the variation?

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Answer 1 · 2018-05-10T16:44:04

See below.

Direct variation is expressed as:

$y = k x$ $y=kx$

Where $k$ $k$ is the constant of variation:

We have:

$6 x - 5 y = 4$ $6x-5y=4$

rearranging:

$y = \frac{6}{5} x - \frac{4}{5}$ $y=6/5x-4/5$

So this does not represent direct variation.

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