For the direct variation equation y = 2 2/3 x, what is the constant proportionality?
A. 3
B. 2 and 2 over 3
C. 2 over 3
D. 2
The direct variation equation is in the form of y = kx, where k is the constant of proportionality.
In this equation, y = 2 2/3 x.
To find the constant of proportionality, we can divide both sides of the equation by x:
2 2/3 = k
Converting the mixed number to an improper fraction:
2 2/3 = 8/3
So, the constant of proportionality (k) is 8/3.
Therefore, the correct answer is C. 2/3.