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Mathematics 7 Online
OpenStudy (anonymous):

http://sketchtoy.com/26793637 is this correct @Mertsj @jim_thompson5910 ?

OpenStudy (anonymous):

yes, but your job is to solve for \(y\) not \(-y\)

OpenStudy (anonymous):

if \(-y>4\) then \(y<-4\)

OpenStudy (anonymous):

ohhh, so switch it?

OpenStudy (anonymous):

at this step \[-7y>28\] you can divide by \(-7\) and change the sense of the inequality to get \(y<\frac{28}{-7}\iff y<-4\)

OpenStudy (anonymous):

Ohhh, Okay. :) I understand now.

OpenStudy (anonymous):

when you multiply / divide by a negative number, change the direction of the inequality

OpenStudy (anonymous):

Thanks @satellite73 :P

OpenStudy (anonymous):

yw

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