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anonymous

  • one year ago

I don't understand this and I would love to learn how to do this: Consider the function g: {(2, 7), (4, 9), (12, 19), (20, 27), (31, 38)} What is g (12)?

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  1. zepdrix
    • one year ago
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    |dw:1433576373863:dw|

  2. zepdrix
    • one year ago
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    |dw:1433576411940:dw|

  3. zepdrix
    • one year ago
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    You put the x value into the function, the y value comes out.

  4. zepdrix
    • one year ago
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    Do you see how that might work with the 12? the 12 is corresponding to x=12

  5. anonymous
    • one year ago
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    so for (2, 7) g would be 3.5?

  6. zepdrix
    • one year ago
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    No, it's not g `times` 2. function notation takes a little getting used to I guess :) hehe. It's the function g, at a specific moment in time or place. The 2 is connected to the g in that way. so we would say that g `of` 2 equals 7. g=7 for that particular x value

  7. anonymous
    • one year ago
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    ooh I always thought of it as times xD sorry so G would be 2 at a certain time and would that would equal 7?

  8. zepdrix
    • one year ago
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    yes, at a certain place, x=2, g=7.

  9. zepdrix
    • one year ago
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    you put 2 INTO the g function and 7 comes out.

  10. zepdrix
    • one year ago
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    |dw:1433576698134:dw|

  11. anonymous
    • one year ago
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    omg soo much clearer now xD so I need to find what goes into g that comes out 12?

  12. zepdrix
    • one year ago
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    The first value in the coordinate pair is always the value going IN

  13. anonymous
    • one year ago
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    so ima give it a shot, please correct me if im wrong lol, The answer is 7? 7 goes into g to make 12?

  14. zepdrix
    • one year ago
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    |dw:1433576795658:dw|

  15. anonymous
    • one year ago
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    ok before I answer, does the function provide the answer? like (12,19)

  16. zepdrix
    • one year ago
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    yes, the ordered pair is written like this, (input, output)

  17. anonymous
    • one year ago
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    ooh ok so it is 19?

  18. zepdrix
    • one year ago
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    ok good job \c:/ so when x=12 goes INTO the function g(x), then 19 comes OUT of it. so therefore g(12) = 19

  19. anonymous
    • one year ago
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    omg awesome thank you! :D

  20. zepdrix
    • one year ago
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    np! Oh and, \(\Large\bf \color{#008353}{\text{Welcome to OpenStudy! :)}}\)

  21. anonymous
    • one year ago
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    Thank you :)

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