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Mathematics 11 Online
iYuko (iyuko):

B or D?

iYuko (iyuko):

http://prntscr.com/6zxe0x

iYuko (iyuko):

Ohhhh So it's d

OpenStudy (rational):

No sorry, it is B actually.

iYuko (iyuko):

Because d is in y=xk?

OpenStudy (rational):

fixed typo Look at D : \[y=\frac{x}{9} = \left(\frac{1}{9}\right)x\] it is in \(y=kx\) form, so it is a direct varitation

iYuko (iyuko):

Ohhh no Im dyslexic. I get them mixed up My fault

OpenStudy (rational):

lol no, my mistake. A,C,D are direct variations only B is inverse variation

iYuko (iyuko):

Ohhhh Okay so it's B

OpenStudy (rational):

Yep!

OpenStudy (triciaal):

yes it would be B

iYuko (iyuko):

So if it's in y=kx its wrong?

OpenStudy (rational):

if \(y\) varies directly with \(x\), we write it as \[\large y\propto x\]

OpenStudy (rational):

if \(k\) is the direct variation constant, \[\large y=kx\]

OpenStudy (rational):

thats the general form of a direct variation equation

iYuko (iyuko):

Okay thanks much!

OpenStudy (rational):

np

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