Asked by Anon

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

8|13
16|26
24|39

A:yes;y=5x
B:yes;y=10x***
C:yes;y=1.625x
D:no;y does not vary directly with x
Answered by Steve
if y varies directly with x, y=kx.

So, y/x is constant.

It is clear that this is not the case. Especially not y=10x. That would give the table

8|80
16|160
24|240

How ever did you arrive at that answer?
Answered by Anon
oh I just realized I put it on B not C sorry

Answered by Steve
Oh, right. C is indeed correct.
Answered by Anon
Thank you.
Answered by GD
C. is correct
Answered by AkAzA
ah hell, I can't find the test anywhere online.
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