yes
y=kx is the formula for direct variation, and k represents constant of variation which can also be called slope.
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For a direct variation equation the constant MUST be 0. Then the ratio of a pair of values of the two variables is the slope.
k is the constant of variation and is the gradient (slope) of the relevant graph.
2y - 3x = 0Put into Slope-Intercept form:2y = 3xDivide by 2:y = 3/2 * x = 1.5x3/2, or 1.5 is the constant of variation.
The slope of the graph of a direct variation is always positive.
Y=k/x where k is the constant of proportionality is an example of indirect or inverse variation. They are the same thing.