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## Tabbiejack 2 years ago Which ordered pair is a solution of the inequality? y≥4x - 5 A. (3, 4) B. (2, 1) C. (3, 0) D. (1, 1)

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1. jim_thompson5910

plug each point into the inequality if you get a true inequality, then that point is in the solution set

2. jim_thompson5910

for example, let's check choice A y≥4x - 5 4≥4*3 - 5 4≥12 - 5 4≥7 which is FALSE, so (3, 4) is NOT a solution So choice A is out

3. Tabbiejack

ok I suck at this really bad

4. jonsysibye

|dw:1367555610977:dw| it would be all points on that line as well as all points above the line I believe

5. jim_thompson5910

well just practice practice practice and you'll get better

6. Tabbiejack

I am a mom trying to help my 13yr old

7. Tabbiejack

What is the answer?

8. jim_thompson5910

follow the steps I did to check choice A to check the other choices

9. jim_thompson5910

you're looking for an inequality that's true when you plug in the given point

10. jonsysibye

well good luck I am pretty sure that the teacher will want the line thing I'm not sure it depends on what was taught but the answers will be D

11. Tabbiejack

I don't tell the answers I just check to know if her work is right I have a degree but I have done this in years.

12. jonsysibye

The answer should be D because \[1\ge4(1)-5\]

13. Tabbiejack

are you sure you got C

14. Tabbiejack

she got C

15. jonsysibye

when you use c you get \[0\ge4(3)-5\] \[0\ge7\] Which isn't true so I am pretty positive it is D

16. Tabbiejack

Thanks she just puts anything down...

17. jonsysibye

No problem I'm glad I could help

18. Tabbiejack

A. (3, 4) B. (2, 1) C. (3, 0) D. (1, 1)

19. Tabbiejack

so D

20. jonsysibye

Yes D

21. Tabbiejack

I have another question she go 2 more wrong can I trouble you?

22. jonsysibye

go right ahead

23. Tabbiejack

How many solutions does the system have? x = -4y + 4 2x + 8y = 8 A. one solution B. two solutions C. infinitely many solutions D. no solution

24. jonsysibye

it should be infinitely many because if you put them into slope intercept form they are the same line

25. Tabbiejack

so c

26. jonsysibye

Yes

27. Tabbiejack

ok last 1

28. jonsysibye

I'm ready

29. Tabbiejack

The local zoo has two water tanks for the elephant exhibit that are leaking One water tank contains 12 gal of water and is leaking at a constant rate of 3 gal/h. The second water tank contains 8 gal of water and is leaking at a constant rate of 5 gal/h. When will the two tanks have the same amount of water? Explain. Let x = the number of hours the tanks are filling and let y = the number of gallons in the tank. A. In 2 hours, because the solution to the system is (2,18). B. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have time be –2 hours. C. In –2 hours, because the solution to the system is (–2,18). D. They will never have the same amount of water because the solution to the system is (–2,18). It is not possible to have –2 gallons in the tanks.

30. jonsysibye

|dw:1367556917704:dw| the answer is B because we can't have negative time

31. Tabbiejack

you are a gem

32. Tabbiejack

I will open another so a can give another medal

33. Tabbiejack

I will open another so a can give another medal

34. jonsysibye

Thank you

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