Question

HURRY!!! PLEASE

Which equation represents a direct variation?

y = 2x
y = x + 4
y =1/2x
y = 3/x

Answer 1

The answer is y = x + 4 because both x and y are being multiplied by the same thing.  They both have a coefficient of 1.  When ever the same number is being multiplied or divided by both x and y, it is considered a direct variation.  This means the coefficients would be the same.

Answer 2

A.
`y=2x`

Explanation:

We are asked to find the equation that represents a direct variation.

We know that a direct variation is in form
`y=kx`, where y is directly proportional to x and k is constant of variation.

Upon looking at our given choices, we can see that equation
`y=2x` represents direct variation, where
`k=2`.

Therefore, option A is the correct choice.