Question 937399
direct variation equation is y = kx


first equation satisfies that because 2/3y = 6x becomes y = 8x when you solve for y.


second equation does not.


third equation does.


fourth equation does.


it looks to me like all of them are direct variation equation except the second one.


in the first equation, k = 8
in the third equation, k = 27
in the fourth equation, k = 1/2.