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anonymous

  • one year ago

Math help please!!

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  1. jim_thompson5910
    • one year ago
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    show me what you have so far

  2. jim_thompson5910
    • one year ago
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    Look at the graph for car 1. Where does it cross the x axis?

  3. jim_thompson5910
    • one year ago
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    |dw:1444422291059:dw|

  4. jim_thompson5910
    • one year ago
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    |dw:1444422300838:dw|

  5. jim_thompson5910
    • one year ago
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    |dw:1444422319253:dw|

  6. jim_thompson5910
    • one year ago
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    the point (70,0)

  7. jim_thompson5910
    • one year ago
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    what this means is that when x = 70, y = 0 x = time y = distance when the time is 70 minutes, the distance is 0 (ie you get to the destination)

  8. jim_thompson5910
    • one year ago
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    that's what the x intercept means for car 1

  9. jim_thompson5910
    • one year ago
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    notice in the table for car 1 how x = 70 and y = 0 pair up (first two rows, last column)

  10. jim_thompson5910
    • one year ago
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    look at the graph of car 2. Where does the curve cross the y axis? you can also look at the table for car 2 and look for the y value when x = 0

  11. jim_thompson5910
    • one year ago
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    yes so this is basically saying that at the beginning time (time t=0 minutes), the distance away from home is 70 km

  12. jim_thompson5910
    • one year ago
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    the distance car 2 is away from the destination is 70 km

  13. jim_thompson5910
    • one year ago
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    give it a shot and tell me what you think

  14. jim_thompson5910
    • one year ago
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    x is involved somehow

  15. jim_thompson5910
    • one year ago
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    I think you meant to say \[\Large 0 \le x \le 70\] ???

  16. jim_thompson5910
    • one year ago
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    try another browser?

  17. jim_thompson5910
    • one year ago
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    what about the equation?

  18. jim_thompson5910
    • one year ago
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    the domain of car 1 is |dw:1444424463898:dw|

  19. jim_thompson5910
    • one year ago
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    since x spans from 0 to 70 for car 1

  20. jim_thompson5910
    • one year ago
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    for car 2, what would the domain be?

  21. jim_thompson5910
    • one year ago
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    look at the car 2 curve do you see how it goes past x = 70 ?

  22. jim_thompson5910
    • one year ago
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    x is greater than or equal to 0, but I don't see where the graph of car 2 stops. This is definitely one of those questions where not enough info is given

  23. jim_thompson5910
    • one year ago
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    Same here. I would ask your teacher about it

  24. jim_thompson5910
    • one year ago
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    you're welcome

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