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help please for brainiest

The value of y varies directly with x. when y = 8.4 , x = 3.5

What is the value of y when x is 7.7?

A) 18.48
B) 12.6
C) 3.82
D) 19.6

Respuesta :

sqdancefan

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Answer:

   A)  18.48

Step-by-step explanation:

X and Y are proportional when there is direct variation. So, we can write the proportion ...

  y/x = 8.4/3.5 = ??/7.7

Multiplying by 7.7, we have ...

  ?? = 7.7(8.4/3.5) = 18.48

The value of y when x = 7.7 is 18.48.

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