Question

Which of the following equations represents direct variation?A. y=3x+4B. xy=6C. 3x-6y=0D. x+y=6Please help!!!

Answer 1

To see if they represent a direct variation we have to write yhem in the form:

`y=kx`

so we rewrite the four equations like:

`\begin{gathered} A\to y=3x+4 \\ B\to y=(6)/(x) \\ C\to y=(3)/(6)x \\ D\to y=-x+6 \end{gathered}`

So the only one that has the same form is option C