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iheartfood Group Title

Question inside :)

  • 2 years ago
  • 2 years ago

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  1. iheartfood Group Title
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    |dw:1352783711712:dw|

    • 2 years ago
  2. iheartfood Group Title
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    graph A, graph B (top is A, bottom is B)

    • 2 years ago
  3. iheartfood Group Title
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    graph C, graph D (Top is C, bottom is D) *** the graphs are the answer choices.. idk which ... please help?

    • 2 years ago
  4. iheartfood Group Title
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    idk, do u get it?

    • 2 years ago
  5. hartnn Group Title
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    can u find intercepts ?

    • 2 years ago
  6. iheartfood Group Title
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    idk how to,.. can u pls show me?

    • 2 years ago
  7. hartnn Group Title
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    for y-intercept, put x=0

    • 2 years ago
  8. iheartfood Group Title
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    what do i plug that into?

    • 2 years ago
  9. hartnn Group Title
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    y=a(0+b)^(1/3)

    • 2 years ago
  10. iheartfood Group Title
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    and i get y=0?

    • 2 years ago
  11. hartnn Group Title
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    so y-intercept is ab^(1/3) now since a and b are positive, y-intercept is also positive.

    • 2 years ago
  12. iheartfood Group Title
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    okay, so what does that mean??

    • 2 years ago
  13. hartnn Group Title
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    which rules out A,C

    • 2 years ago
  14. iheartfood Group Title
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    okay so how do i figure out between B and D?

    • 2 years ago
  15. hartnn Group Title
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    find x-intercept

    • 2 years ago
  16. iheartfood Group Title
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    how do i do that?

    • 2 years ago
  17. hartnn Group Title
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    put y=0 in that equation

    • 2 years ago
  18. iheartfood Group Title
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    which one? the one we just found?

    • 2 years ago
  19. iheartfood Group Title
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    so i get this? 0=ab^(1/3) ??

    • 2 years ago
  20. hartnn Group Title
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    the original one 0=a(x+b)^(1/3) so x= ?

    • 2 years ago
  21. iheartfood Group Title
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    so i get 0=(ax+ab)^1/3 ??? and idk how to find x= tho :(

    • 2 years ago
  22. hartnn Group Title
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    0=a(x+b)^(1/3) (x+b) = 0 (because a is positive and not 0, x+b must be 0) so x=-b means x - intercept is negative

    • 2 years ago
  23. hartnn Group Title
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    which graph among, B and d has x-intercept negative ?

    • 2 years ago
  24. iheartfood Group Title
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    okay, so hmmm is it B then?? the one i attached??

    • 2 years ago
  25. hartnn Group Title
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    yes, its b

    • 2 years ago
  26. iheartfood Group Title
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    okay thanks!!! :)

    • 2 years ago
  27. hartnn Group Title
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    DID U UNDERSTAND HOW ITS DONE ?

    • 2 years ago
  28. iheartfood Group Title
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    yeah :) find the intercepts and substitute and see whether it positive or negative... and u first find the first one and rule it out, then u narrow the answers down based on that intercept... then you find the next intercept and see if its pos or neg. and based on that u find ur graph. is that right? did i understand it correctly? :)

    • 2 years ago
  29. hartnn Group Title
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    oh,yes ! :)

    • 2 years ago
  30. iheartfood Group Title
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    yayy!! :) thank youuu :)

    • 2 years ago
  31. hartnn Group Title
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    what about finding intercepts, did u get how to find them ?

    • 2 years ago
  32. iheartfood Group Title
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    i think so... i do get confused about it tho sometimes... :( could u pls give me a summary on how to find them? so i understand them more clearly??

    • 2 years ago
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