If the equation is y = kx then the constant of proportionality is k.
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The answer depends on what the constant is: the y-intercept in a linear graph, constant of proportionality, constant of integration, physical [universal] constant.
If the relationship between two variables in a table is that of direct variation, then the unit rate or the constant of proportionality is determined by dividing any non-zero value of one of the variables by the corresponding value of the other variable.
The equation is xy = 22.5
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In a proportional relationship, y is directly proportional to x, meaning y = kx, where k is the constant of proportionality. To find k, we can use the given values: 14 = k(8). Solving for k, we get k = 14/8 = 1.75. Therefore, the equation for y in terms of x is y = 1.75x.