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anonymous

  • one year ago

Gina pumps 40 cubic inches of air per second into a balloon. The function below shows the total amount of air f(t) inside the balloon after t seconds: f(w) = 40t + 5 Which statement best describes the y-intercept of the graph of the function? A. It is equal to 40 and represents the amount of air already present in the balloon before Gina starts blowing. B. It is equal to 5 and represents the amount of air already present in the balloon before Gina starts blowing. C. It is equal to 5 and represents the amount of air in the balloon after 1 second.

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  1. anonymous
    • one year ago
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    or D. It is equal to 45 and represents the amount of air in the balloon after 1 second.

  2. skullpatrol
    • one year ago
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    Any ideas?

  3. anonymous
    • one year ago
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    D?

  4. skullpatrol
    • one year ago
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    First of all you have to know what is the value of the y-intercept?

  5. anonymous
    • one year ago
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    40?

  6. skullpatrol
    • one year ago
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    In the equation: y = mx + b b is the y-intercept.

  7. anonymous
    • one year ago
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    oh ok

  8. triciaal
    • one year ago
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    the y intercept means when t = 0

  9. anonymous
    • one year ago
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    oh

  10. triciaal
    • one year ago
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    what is your choice?

  11. anonymous
    • one year ago
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    A?

  12. triciaal
    • one year ago
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    put both responses together

  13. anonymous
    • one year ago
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    so then whats the answer?

  14. triciaal
    • one year ago
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    the y-intercept is the value of the function when t = 0 in your equation y = mx + b the y-intercept = b

  15. triciaal
    • one year ago
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    |dw:1438102215426:dw|

  16. anonymous
    • one year ago
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    i dont get it lol

  17. anonymous
    • one year ago
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    so then the answer is?

  18. triciaal
    • one year ago
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    |dw:1438102498957:dw|

  19. triciaal
    • one year ago
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    |dw:1438102589362:dw|

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spraguer (Moderator)
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