How do you determine the constant of variation for the direct variation given by $4 x = - y$ $4x=-y$ ?

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Answer 1 · 2016-01-15T06:39:43

Explanation given below.

Direct variation equation is of the form $y = k x$ $y=kx$
We are given $- y = 4 x$ $-y=4x$
This can be written as $y = - 4 x$ $y=-4x$

Comparing with direct variation equation we can see the constant of variation $k = - 4$ $k=-4$

How do you determine the constant of variation for the direct variation given by 4x=−y4x=-y?