Which of the following equations represents a direct variation?

y equals 8

y equals 8 divided by x

y equals 8 times x

y equals x plus 8

Question

Which of the following equations represents a direct variation? 

 y equals 8 

 y equals 8 divided by x 

 y equals 8 times x 

 y equals x plus 8

anonymous · Answer

Ok so a direct variation means that as you scale one side, the other side will scale linearly.

anonymous · Answer

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anonymous · Answer

As one increases, the other increases linearly. That is direct variation.

As one increases, the other decreases linearly. This is called "indirect" variation.

anonymous · Answer

There is no variation with y = 8. This is just saying that y doesn't vary at all.

So it cannot be A

anonymous · Answer

y = 8/x Hmm, it seems that when one increases, the other decreases linearly. This is indirect variation. So it cannot be B.

anonymous · Answer

Let's see what you get for C and D =0D

anonymous · Answer

I'm guessing its C...