Which does not show a direct variation between x and y?

a. y = 4/x

b. y = 0.5x

c. y = 7x

d. y = x/9

I sorta think it's d or a but I'm not sure

Question

Which does not show a direct variation between x and y? 

a. y = 4/x

b. y = 0.5x

c. y = 7x

d. y = x/9

I sorta think it's d or a but I'm not sure

misty1212 · Answer

HI!!

misty1212 · Answer

unfortunately you would be wrong, because $$y=\frac{x}{9}$$is the same as 
$$y=\frac{1}{9}x$$ direct

misty1212 · Answer

pick the one with the variable in the denominator

anonymous · Answer

maybe c then?

misty1212 · Answer

lol no 
do you know what i mean when i say "the variable in the denominator"?  that means it is in in the bottom of the fraction

misty1212 · Answer

direct variation means it looks like 
$$y=kx$$ and $$y=7x$$ looks just like that

anonymous · Answer

aha, I'm not very good with math. Can't understand half of it but yea, I sorta got what you meant when you said that. So then would it be a? Because the x is in the bottom of the fraction?

misty1212 · Answer

yes that is the one, A has the variable in the denominator, so it is NOT direct variation !

anonymous · Answer

okay, thank you for helping me with this! :D

misty1212 · Answer

$$\color\magenta\heartsuit$$