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Mathematics 21 Online
OpenStudy (anonymous):

The graph below is represented by which system of inequalities? (Graph in comments) x − y > 5 and 3x + y > 3 x − y < 5 and 3x + y < 3 x − y < 5 and 3x + y > 3 x − y > 5 and 3x + y < 3

OpenStudy (anonymous):

OpenStudy (noelgreco):

Choose a point in the shaded area and plug the values in each inequality. I used the point (2,0). Always try to get one of the values = zero. If the origin is included it's a piece of cake.

OpenStudy (anonymous):

i dont know what you mean...

OpenStudy (noelgreco):

Can you see that the point (2,0) is in the shaded area?

OpenStudy (anonymous):

yes! so do i have to find that equation that answers to (2,0)

OpenStudy (noelgreco):

Plug those values for x and y into each of the possible answers, and choose the one that gives a true statement.

OpenStudy (anonymous):

okay , gimmie a minute :)

OpenStudy (anonymous):

its not choice a

OpenStudy (noelgreco):

Good

OpenStudy (anonymous):

choice c works! its correct for both

OpenStudy (noelgreco):

You got it!

OpenStudy (anonymous):

thank you so much for the help

OpenStudy (noelgreco):

Sure. Just remember that, if you encounter this type of question again, choose a point in the shaded area, and work through each option. Have fun.

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