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iheartfood

  • 2 years ago

Question inside :)

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  1. iheartfood
    • 2 years ago
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    |dw:1352783711712:dw|

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

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

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

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

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

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

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

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

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

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

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

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

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

  15. hartnn
    • 2 years ago
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    find x-intercept

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

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

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

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

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

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

  22. hartnn
    • 2 years ago
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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

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

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

  25. hartnn
    • 2 years ago
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    yes, its b

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

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

  28. iheartfood
    • 2 years ago
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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? :)

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

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

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

  32. iheartfood
    • 2 years ago
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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??

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