Determine the constant of variation for the direct variation given.

(0, 0), (3, 12), (9, 36)

3

4

12

The formula is y = k x where k is the constant of variation, so plug a coordinate in the formula to find value of k, lets get (3,12) you have 12 = 3k, then k = 4, if you get (9,36) then you have 36 = 9k where k = 4