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anonymous

  • one year ago

Inequality help! Will fan and medal! Write and inequality for the graph. http://prntscr.com/8ou82c

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  1. Jhulian
    • one year ago
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    A

  2. anonymous
    • one year ago
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    Do you have an explanation as to why it's A? JW

  3. Jhulian
    • one year ago
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    After you get you equation, try pluging in various values of Y and X to confirm your answer

  4. anonymous
    • one year ago
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    Okay. I'll try some.

  5. Jhulian
    • one year ago
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    Or more precisely it has a closed domain

  6. anonymous
    • one year ago
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    I still don't understand lol

  7. Jhulian
    • one year ago
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    Okay...i will explain in a minute

  8. anonymous
    • one year ago
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    Okay, thanks.

  9. mathstudent55
    • one year ago
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    From the graph I see this: y-intercept is 5 slope is (5 - 0/(0 - (-6)) = 5/6 shaded area is under the line line is solid From the slope and y-intercept, the equation of the line is (slope-intercept form) y = (5/6)x + 5 From the shading under the line, the inequality must have a < or <= (in the slope-intercept form.). Because of the solid line, the inequality sign is <=. That means this inequality: y <= (5/6)x + 5 Now subtract the x-term from both sides: -(5/6)x + y <=5 Multiply both sides by 6: -5x + 6y <= 30 Multiply both sides -1 (notice the inequality sign changes direction): 5x - 6y >= -30

  10. anonymous
    • one year ago
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    So D's the answer, then?

  11. mathstudent55
    • one year ago
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    Yes.

  12. anonymous
    • one year ago
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    Thanks!

  13. mathstudent55
    • one year ago
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    You're welcome.

  14. Jhulian
    • one year ago
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    Thanks @mathstudent55 ..

  15. mathstudent55
    • one year ago
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    @Jhulian You're welcome.

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