Respuesta :

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
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Answer:

The answer is 4

Step-by-step explanation:

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