What is the relation between the variables in the equation x^4/y=7?

OPTION C

Step-by-step explanation:

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

y=kx

Where k is the constant of proportionality.

Therefore, if you solve for y from the equation given in the problem above, you obtain:

Where k=1/7

Therefore, it is a direct variation where y varies directly as x^4 (The option is C).

Option C is the correct option.

Step-by-step explanation:

The given expression is

Further we simplify the expression as

Now if we put the value of x as 1, 2, 3, 4

Then

For x = 1

y = 1/7×1 = 1/7

For x = 2

For x = 3

That means when we increase the value of x value of y gets increased.

Therefore y varies directly as

Option C is the correct option.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer