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Mathematics 7 Online
OpenStudy (anonymous):

I GIVE MEDALS HELP ME PLEASE Which ordered pair does not satisfy the system? y < -2x + 9 and y > 3/4x - 2 A. (-1,4) B. (-1,-1) C. (3, -2) D. (2,3)

OpenStudy (anonymous):

4 < -2(-1)+9 4<2+9 4<11 yes

OpenStudy (anonymous):

so what's the answer? :O @larryboxaplenty

OpenStudy (anonymous):

go through them all like that.

OpenStudy (anonymous):

I did and I keep getting (2,3) but my teacher says its wrong

OpenStudy (anonymous):

You have to make sure each point also goes through y>(3/4)x-2

OpenStudy (anonymous):

is it (3,-2) I almost got that one @larryboxaplenty

OpenStudy (anonymous):

If a point is true for both, then you move on. The answer is false for one or both

OpenStudy (anonymous):

i can't find it :( @larryboxaplenty can you tell me the answer i promise ill figure it out later im just in a rush

OpenStudy (anonymous):

please @larryboxaplenty

OpenStudy (anonymous):

I am also doing them by hand

OpenStudy (anonymous):

thank you so much :) tell me when you find out?

OpenStudy (anonymous):

4>(3/4)(-1)-2 4>-2.75 yes. The point (-1,4) is true for both so we move on

OpenStudy (anonymous):

yay omg thanks can you help me with one more problem?

OpenStudy (anonymous):

-1<-2(-1)+9 -1<11 yes

OpenStudy (anonymous):

Which of the following is a solution of the system represented by the graph shown? The intersection is in the darker green area. (4, 1) (1, 4) (-2, 3) (3, -2)

OpenStudy (anonymous):

@larryboxaplenty ^

OpenStudy (anonymous):

-1>(3/4)(-1)-2 -1>-2.75 true. I am still doing the first problem

OpenStudy (anonymous):

-2<-2(3)+9 -2<0 true

OpenStudy (anonymous):

-2>(3/4)(3)-2 -2>0.25 false

OpenStudy (anonymous):

The answer for 1 should be C

OpenStudy (anonymous):

THANK YOU :) omg it makes sense can you help me with the second problem i posted up there?

OpenStudy (anonymous):

A solution would be in the green section

OpenStudy (anonymous):

yeah but which one?

OpenStudy (anonymous):

Ohh I see

OpenStudy (anonymous):

Any point in the DARK green area is a solution to the system

OpenStudy (anonymous):

yeah :)

OpenStudy (anonymous):

(1,4) is the only point in the dark green section.

OpenStudy (anonymous):

Thank you so much for your help! @larryboxaplenty

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