giulianoganette giulianoganette
  • 22-02-2021
  • Mathematics
contestada

y varies directly as x, if y = 9, when x = -3, find x when y = -27

Respuesta :

tunisonalex tunisonalex
  • 22-02-2021

Answer:

9

Step-by-step explanation:

x Is -1/3 of y

-27x-1/3= 9

Answer Link
vintechnology vintechnology
  • 23-12-2021

The value of x when y = -27 is 9.

y varies directly as x

Therefore,

y ∝ x

y = kx

where

k = constant of proportionality

Let's find k when y = 9 and x = -3

y = kx

9 = -3k

k = 9 / -3

k = -3

Let's find x when y = -27

y = kx

-27 = -3x

x = -27 / -3

x = 9

learn more on variation here: https://brainly.com/question/25391692?referrer=searchResults

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