Question

Does the equation represent a direct variation? If so, find the constant of variation.

5x = -3y

A. no

B. yes; k = -5/3

C. yes; k = 5/3

D. yes; k = 3/5

Answer 1

If "x varies directly with y", one must be able to write "x = ky" for a suitable k.

Can you write your equation in that form?

Answer 2

x=5-3y?

Answer 3

Hi welcome to Openstudy !!

Answer 4

How did you get that?

5x = -3y

That '5' is attached to the 'x' by multiplication. You cannot use addition or subtraction to remove it. Try division.

Answer 5

\(x={-3\over5}y\implies x\propto y\)

Answer 6

you can have it similarly in the other way
\[y={5\over-3}x\implies y\propto x\]
so, x and y are linearly proportional to one another

Answer 7

@momo1234 kapeesh?

Answer 8

oh yeah i get it now thank you

Answer 9

welcome