Does the equation 7x-4y=0 represent a direct variation? what is the constant of variation?

yes, k =

Step-by-step explanation:

The equation representing direct variation is

y = kx ← k is the constant of variation

rearrange 7x - 4y = 0 into this form

subtract 7x from both sides

- 4y = - 7x ( divide both sides by - 4 )

y = x ← in standard form

with k =

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

answer: 270

step-by-step explanation:

you have to times 200 by 1.35 to get your answer