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anonymous

  • one year ago

The graph shows the production of cars per day at a factory during a certain period of time. What is the domain of this function during this period? Graph of days versus cars. Points are plotted at the following coordinates: 0 comma 0, 1 comma 50, 2 comma 100, 3 comma 150, 4 comma 200, 5 comma 250, 6 comma 300, 7 comma 350, 8 comma 400, 9 comma 450. The domain is all real numbers 0 through 9. The domain is all integers 0 through 9. The domain is all positive real numbers. The domain is all positive integers.

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  1. anonymous
    • one year ago
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  2. jim_thompson5910
    • one year ago
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    Look at the points on the graph. What is the x coordinate of each point?

  3. anonymous
    • one year ago
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    1,2,3,4,5,6...etc? I really don't know, I missed this lesson :/

  4. jim_thompson5910
    • one year ago
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    0 as well

  5. anonymous
    • one year ago
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    I was correct?

  6. jim_thompson5910
    • one year ago
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    so the domain is the set of all of those x values put together {0,1,2,3,4,5,6,7,8,9} it is the set of allowed inputs

  7. anonymous
    • one year ago
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    So

  8. anonymous
    • one year ago
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    I think it's A or B.

  9. jim_thompson5910
    • one year ago
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    saying something like ` The domain is all positive integers.` is false because x = 12 for instance is NOT part of the domain. It stops at x = 9

  10. jim_thompson5910
    • one year ago
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    What is the difference between `real numbers` and `integers` ?

  11. anonymous
    • one year ago
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    Integers are numbers that are both positive and negative

  12. jim_thompson5910
    • one year ago
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    is something like 12.5 an integer ?

  13. anonymous
    • one year ago
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    Yes?

  14. jim_thompson5910
    • one year ago
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    no, 12.5 isn't a whole number it has the fractional/decimal part 0.5

  15. jim_thompson5910
    • one year ago
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    12 is but 12.5 is not

  16. jim_thompson5910
    • one year ago
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    integers are whole numbers real numbers are any decimal number, fractional number, etc you can think of

  17. anonymous
    • one year ago
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    Negative and Positive?

  18. jim_thompson5910
    • one year ago
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    integers can be either positive or negative, yes but they are also whole numbers too

  19. anonymous
    • one year ago
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    I think it's A.

  20. jim_thompson5910
    • one year ago
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    is there a point with say x = 7.2 ? 7.2 is a real number between 0 and 9

  21. anonymous
    • one year ago
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    No. At least I don't think so due to 7.2 is not a Whole Number.

  22. jim_thompson5910
    • one year ago
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    the points given in the graph only have x coordinates that are whole numbers, ie integers

  23. jim_thompson5910
    • one year ago
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    the domain is actually the set of 0 through 9 where every number in this set is a whole number or integer

  24. jim_thompson5910
    • one year ago
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    x = 3 is allowed but x = 3.7562 is not allowed. There are gaps between the different numbers

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