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Mathematics 18 Online
OpenStudy (mikezack123):

please help!

OpenStudy (mikezack123):

OpenStudy (mikezack123):

@AccessDenied @amistre64 @beccaboo333 @dan815 @dumbcow @Hero @jim_thompson5910 @Luigi0210 @ParthKohli

jimthompson5910 (jim_thompson5910):

If a point is a solution to a system of inequalities, then it must make all of the inequalities true (when you plug in the x,y values)

jimthompson5910 (jim_thompson5910):

What do you get when you plug (x,y) = (7,1) into the first inequality?

OpenStudy (mikezack123):

7 - 1 > 3

OpenStudy (mikezack123):

6 > 3 @jim_thompson5910

jimthompson5910 (jim_thompson5910):

so that inequality is true what about the second inequality?

OpenStudy (mikezack123):

9 < 6 is the second inequality... untrue

OpenStudy (mikezack123):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

because it does not make both inequalities true, this means (7,1) is not a solution to the entire system

jimthompson5910 (jim_thompson5910):

Hopefully you see how this all works?

OpenStudy (mikezack123):

gotcha! so the only possible answer is D. Thank you @jim_thompson5910

jimthompson5910 (jim_thompson5910):

nice work

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