Seudónimo Seudónimo
  • 22-02-2016
  • Mathematics
contestada

when y varies directly with x , and y = 15 and x = 3,

what is the equation?

Respuesta :

Аноним Аноним
  • 22-02-2016
The equation for direct variation is y = kx

k is the constant of variation. 

15 = k(3)
15/3 = k
k = 5

The constant is 5

Answer: y = 5x
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