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Mathematics 9 Online
Nicole:

http://prntscr.com/nfc418

Nicole:

@Vocaloid @Narad @dude

Narad:

\[y= 7/x\]

Nicole:

http://prntscr.com/nfc6vk

Narad:

Direct variation

Narad:

y is proportional yo x

Narad:

\[y=-2x\]

Nicole:

http://prntscr.com/nfcdt9

Narad:

\[y=kx\] \[32=8k\] \[k=32/8=4\] The answer is 4

Nicole:

http://prntscr.com/nfcgck

Narad:

\[y=k/x\] \[k=yx=14*8=112\] The constant is = 112

Nicole:

http://prntscr.com/nfcib6

Narad:

\[y=k/x\] \[k=xy=3*9=27\] THe equation is \[y=27/x\]

Nicole:

http://prntscr.com/nfck1s

Narad:

\[y=kx\] \[k=yx=10*5=50\] The equation is \[y=50/x\]

Nicole:

http://prntscr.com/nfcl57

Narad:

This is a direct variation This is a line through the origin and y is proportional to x.

Nicole:

ohh okay http://prntscr.com/nfcm1n

Narad:

This is an inverse variation y decreases as x increases

Nicole:

http://prntscr.com/nfcn4g

Narad:

\[y=k/x\] \[k=yx=10*7=70\] \[y=70/x\] When x=10 \[y=70/10=7\] The answer is 7

Nicole:

http://prntscr.com/nfcnqj

Narad:

\[y=kx\] k=y/x=25/5=5 \[y=5x\] When x=7 \[y=5*7=35\] The answer is 35

Nicole:

Okay thank you for the help!!

Narad:

You are welcome

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