nathanone06
nathanone06 nathanone06
  • 10-02-2021
  • Mathematics
contestada

If y varies directly as x, and y = 7 when x = 3, find y when x = 7

If y varies directly as x and y 7 when x 3 find y when x 7 class=

Respuesta :

cristhyanmorenomarqu
cristhyanmorenomarqu cristhyanmorenomarqu
  • 10-02-2021

Answer:

A

Step-by-step explanation:

Direct variation, by definition, has the form shown below:

y=kx  

Where k is the constant of proportionality.

Given the information in the problem, you can find k:

7=3k

k=7/3

Now you can find y when x=7 as following:

y=(7/3)x

Substitute values.

y=(7*7)/3

y=49/3

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