Respuesta :

Answer:

c. y = 3x

Step-by-step explanation:

(3,9) (4,12)

(12-9)/(4-3)

3/1=3

y-9=3(x-3)

y-9=3x-9

y=3x

C is the answer because 3x3=9, 4x3=12, 5x3=15 and so on