Is the relationship between the values in the table to the right a direct​ variation, an inverse​ variation, or​ neither? If the relationship is a direct or inverse​ variation, then write an equation to model the variation.

a- direct
b- neither
c- inverse

a) Direct variation: y = 3x

b) Neither (no common ratio or factor between values)
c) Inverse variation: y = 12/x