no. It must be an equation of the form y = kx.
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If a variable X is in inverse variation with a variable Y, then it is in direct variation with the variable (1/Y).
When two variables are related in such a way that the ratio of their values always remains the same, the two variables are said to be in direct variation. y=2x is direct variation y=x+2 is not direct variation
Suppose the two variables are denoted by X and Y. If Y is a constant multiple of X, that is Y = c*X, then the variation is direct. If the value of X*Y is a constant, that is Y = c/X, then the variation in inverse.
find the direct variation equation 3x+y=0
A variable, Y, is in direct square variation with a variable, X, if Y = kX2 where k is some (non-zero) constant.