# Is #7x+4y=2# a direct variation equation and if so, what is the constant of variation?

It is a direct variation is you can rewrite it in the form

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No, the equation (7x + 4y = 2) is not a direct variation equation because it cannot be written in the form (y = kx). A direct variation equation must be in the form (y = kx) where (k) is the constant of variation.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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