Question 199367
Which equation is a direct variation with a constant of variation of 2/3? 

A)y=2x+3 B)2y=3x C)3y=2x D)x=2y+3

<pre><font size = 4 color="indigo"><b> 
We are looking for the one when solved for y gives{{{y=(2/3)x}}}

Solve each for y:

A) {{{y=2x+3}}} is already solved for y.

B) {{{2y=3x}}} 

Solve it for y

{{{y=(3/2)x}}}, that's not it.

C)3y=2x 

Solve it for y:

{{{y=(2/3)x}}}, yes that's it!!!

D)x=2y+3

We know it isn't this one, since the
answer is C, but let's see why it
isn't anyway:

Solve it for y:

{{{y=x/2-3/2}}}

It's not.

The only correct answer is C)

Edwin</pre>