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heyitslizzy13

  • one year ago

:)

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  1. heyitslizzy13
    • one year ago
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    posting in a second!

  2. heyitslizzy13
    • one year ago
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  3. heyitslizzy13
    • one year ago
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    no worries, he said he'd help me, just needed to open a new question :)

  4. Hero
    • one year ago
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    Lizzy, first create your number line and Include the critical points.

  5. heyitslizzy13
    • one year ago
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    |dw:1442692154488:dw| how do i know if they're included or not?

  6. heyitslizzy13
    • one year ago
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    sorry that extra 1 isn't supposed to be there oops

  7. Hero
    • one year ago
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    Well We don't need to include any open or closed circles just yet. We're just identifying the critical points for now.

  8. heyitslizzy13
    • one year ago
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    ok

  9. Hero
    • one year ago
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    explain how you figured out the critical points.

  10. heyitslizzy13
    • one year ago
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    i took the factors and just solved for x and got -5,-5.4/3,-1

  11. Hero
    • one year ago
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    Okay so, plot-5, 4/3 and -1 on your number line

  12. heyitslizzy13
    • one year ago
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    |dw:1442692603203:dw|

  13. Hero
    • one year ago
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    Yesqr posted that already but, you only want to plot the critical points for now.

  14. heyitslizzy13
    • one year ago
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    aren't those the critical points?

  15. Hero
    • one year ago
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    The critical points are the valves you found earlier from the factors of the expression.

  16. heyitslizzy13
    • one year ago
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    yeah, -5, 4/3, and -1 right?

  17. Hero
    • one year ago
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    Yes,

  18. heyitslizzy13
    • one year ago
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    those are the ones i plotted :/

  19. heyitslizzy13
    • one year ago
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    you mean the 0 that i put

  20. heyitslizzy13
    • one year ago
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    |dw:1442692918759:dw|

  21. Hero
    • one year ago
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    That,, almost right. You plotted 4/5 instead of 4/3

  22. heyitslizzy13
    • one year ago
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    ahhh my bad

  23. heyitslizzy13
    • one year ago
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    |dw:1442693095991:dw|

  24. Hero
    • one year ago
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    Your number line Should also include negative And positive infinity. We want to be able to dearly See the distinct intervals involved here.

  25. heyitslizzy13
    • one year ago
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    |dw:1442693173258:dw|

  26. Hero
    • one year ago
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    Remember, if you do something right the first time, then you'll only have to it once.

  27. Hero
    • one year ago
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    Do you know what the next step is?

  28. heyitslizzy13
    • one year ago
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    mm i'm not sure, but i distributed :/ i'm not sure if that;s correct

  29. Hero
    • one year ago
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    How many intervals do we have on the number line?

  30. heyitslizzy13
    • one year ago
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    4

  31. heyitslizzy13
    • one year ago
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    WE HAVE TO TEST

  32. heyitslizzy13
    • one year ago
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    RIGHT

  33. Hero
    • one year ago
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    What can we do with each interval?

  34. heyitslizzy13
    • one year ago
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    test points

  35. Hero
    • one year ago
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    Correct.

  36. heyitslizzy13
    • one year ago
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    -6 works

  37. heyitslizzy13
    • one year ago
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    -3 works

  38. heyitslizzy13
    • one year ago
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    0 does not

  39. heyitslizzy13
    • one year ago
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    and 2 does

  40. Hero
    • one year ago
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    Make sure you're testing Numbers from each of the distinct Intervals involved.

  41. heyitslizzy13
    • one year ago
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    i did :) -6,-3,0, and 2

  42. Hero
    • one year ago
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    Okay yes you have done it Correctly it seems,

  43. heyitslizzy13
    • one year ago
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    thanks!!!

  44. Hero
    • one year ago
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    I'm imagining the graph of expression. I think I understand Why you're getting these results

  45. Hero
    • one year ago
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    Usually the solution Intervals do not Overlap.

  46. Hero
    • one year ago
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    But in this case we have Overlap because the graph Of the expression hits zero then goes back In the positive direction

  47. Hero
    • one year ago
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    So What is your solution for this one?

  48. heyitslizzy13
    • one year ago
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    |dw:1442694101697:dw|

  49. Hero
    • one year ago
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    Okay, it looks right.

  50. Hero
    • one year ago
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    I didn't do any computation I assume your work is correct

  51. heyitslizzy13
    • one year ago
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    okay, thank you so much! (:

  52. Hero
    • one year ago
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    YW Good luck with the rest Hope I was able to help Make your HW easier

  53. heyitslizzy13
    • one year ago
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    you did thanks!!! :)

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