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

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Answer 1 · 2017-10-22T20:34:26

It is not a direct variation. See explanation.

An equation is a direct variation only if it can be transformed to

#y=ax#

In such equation the parameter #a# is the variation constant.

The given equation is not a direct variation because it has an aditional parameter #4#.