Respuesta :

mathstudent55

Answer:

4

Step-by-step explanation:

y = kx

Use point (3, 12).

12 = k * 3

k = 12/3 = 4

y = 4x

Answer: 4

musiclover10045

Divide y by x:

12/3 = 4

36 / 9 = 4

The constant of variation is 4

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