vilmabran6270 vilmabran6270

20-12-2021
Mathematics

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15.

Write a direct variation equation if x = 7 and y = 42.

16.

Use the equation in example 15 to find x if y = 66.

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sqdancefan sqdancefan

20-12-2021

Answer:

15. y = 6x

16. x = 11

Step-by-step explanation:

15. A direct variation equation is of the form ...

y = kx

Solving for k, we find ...

k = y/x = 42/7 = 6

The equation is y = 6x.

__

16. Filling in the given values, we have ...

66 = 6x

11 = x . . . . . . . divide by 6

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