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anonymous

  • one year ago

which correctly describes how the graph of inequality 4x -2y > 20 is shaded? A. Above the solid line B. Below the solid line C. Above the dashed line D.Below the dashed line

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  1. anonymous
    • one year ago
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    @pooja195 @Hero

  2. anonymous
    • one year ago
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    Someone please help ;-;

  3. anonymous
    • one year ago
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    anyone?

  4. anonymous
    • one year ago
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    Please no direct answers, Just want to know the steps so I can do the rest on my own

  5. e.mccormick
    • one year ago
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    Well, one way to see this more easily is to get it into something like y=mx+b form so you will know a little about the line. Then test some.

  6. Elsa213
    • one year ago
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    ye.... wat he said. c:

  7. anonymous
    • one year ago
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    so you have to play around with it correct?

  8. e.mccormick
    • one year ago
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    I'll do the simple example, y<x+1. You could be given that as: y-x<1 And yes, it is manipulating it to get it into the form where it is clear what the intercept point is.

  9. e.mccormick
    • one year ago
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    On y<x+1 The intercept is 1. So when x is 0, y is 1... BUT, it is an inequality. That means y is not really 1. It is less than 1 in this case. So that tells me that wherever the line is, the shading for the y values must be below the line. The line would also be dashed because it is is < and not \(\le\).

  10. anonymous
    • one year ago
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    so is there any chance we can start you know process of elimination or we cant?

  11. e.mccormick
    • one year ago
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    Once you have it in that form, it is pretty easy to tell if it will be above or below. Just need to be careful if you do any division by a negative because that changes < into > or > into <.

  12. e.mccormick
    • one year ago
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    \(\ge\) and \(\le\) are solid lines. > and < are dashed lines. That alone elimiantes 2 answers.

  13. anonymous
    • one year ago
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    so it's solid?

  14. anonymous
    • one year ago
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    wait i mean dashed

  15. e.mccormick
    • one year ago
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    Yah. 4x -2y > 20 uses >. Even if it flips direction it would be <. So it must be dashed. When you get it into y=mx+b form you know the other part: y>mx+b means y is greater (above) the line y<mx+b means y is lesser (below) the line

  16. anonymous
    • one year ago
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    so it has to be C or D

  17. e.mccormick
    • one year ago
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    Yes.

  18. anonymous
    • one year ago
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    Think your trying to say it's D correct?

  19. Elsa213
    • one year ago
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    he gone.....

  20. anonymous
    • one year ago
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    @e.mccormick @ganeshie8 @EclipsedStar

  21. Elsa213
    • one year ago
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    chico..... ur correct c:

  22. anonymous
    • one year ago
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    really? :D

  23. Elsa213
    • one year ago
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    eh ye.... ig

  24. e.mccormick
    • one year ago
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    Yes, I was gone... the joys of moderaton. 4x -2y > 20 -2y > -4x + 20 y < 2x - 10 So yes, below the line.

  25. anonymous
    • one year ago
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    lol xD thank you so much

  26. anonymous
    • one year ago
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    With your helpful comments now I understand

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