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whadduptori

  • 2 years ago

A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours.

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  1. estudier
    • 2 years ago
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    (3,17) and (5,15) Calculate a line equation in the usual way (x is t, y is h) Then put t (x) is 8 to find h(y)

  2. whadduptori
    • 2 years ago
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    would you do y2-y1/x2-x1

  3. estudier
    • 2 years ago
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    Sure, to get the slope, then use one of the points to get c

  4. whadduptori
    • 2 years ago
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    i got a -1 what do i after that?

  5. estudier
    • 2 years ago
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    then use one of the points to get c

  6. whadduptori
    • 2 years ago
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    wait how do i do that?

  7. estudier
    • 2 years ago
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    y = mx +c You just got m, now sub one of the x,y pairs in to get c

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spraguer (Moderator)
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