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anonymous

  • one year ago

please help I will give a medal Two quadratic functions are shown. Function 1: f(x) = 4x2 + 8x + 1 Function 2: x -2 -1 0 1 g(x) 2 0 2 8 Which function has the least minimum value and what are its coordinates? Function 1 has the least minimum value and its coordinates are (−1, −3). Function 1 has the least minimum value and its coordinates are (0, 1). Function 2 has the least minimum value and its coordinates are (−1, 0). Function 2 has the least minimum value and its coordinates are (0, 2).

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  1. anonymous
    • one year ago
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    if you are on please respond i think i got ur answer

  2. anonymous
    • one year ago
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    okay thank you

  3. welshfella
    • one year ago
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    to find the minimum value of the first one convert to vertex form

  4. anonymous
    • one year ago
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    well first in the simpliset way do u want anwser of show the answer

  5. anonymous
    • one year ago
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    I think so @jamesr

  6. welshfella
    • one year ago
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    for the second one part of the graph will lok like:- |dw:1437137302887:dw|

  7. anonymous
    • one year ago
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    go the graph and if you got the calculator a ti84+ to be exact there will be a graph button and thats how you graph like he has above for the second part but also for the first part ill send a picture for you to understand

  8. welshfella
    • one year ago
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    you can find the minimum value of the first one by completing the square to get the vertex form

  9. anonymous
    • one year ago
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    |dw:1437137623006:dw| kinda messed up i know

  10. anonymous
    • one year ago
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    okay so would he answer be B?

  11. welshfella
    • one year ago
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    f(x) = 4x2 + 8x + 1 f(x) = 4(x^2 + 2x) + 1 = 4(x + 1)^2 -4 = 1 = 4(x + 1)^2 - 3 that's vertex form for a(x - b)^2 + c vertex is (b , c) so comparing with our result we see that at the vertex which is a minimum the coordinates are (-1,-3)

  12. anonymous
    • one year ago
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    yes

  13. anonymous
    • one year ago
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    ooo I see so the answer is a?

  14. welshfella
    • one year ago
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    from the drawing you can see that the minimum is at (-1,0) for function 2 so what is the correct option?

  15. anonymous
    • one year ago
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    its B

  16. welshfella
    • one year ago
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    No it s A

  17. anonymous
    • one year ago
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    because its Function 1 has the least minimum value and its coordinates are (0, 1). i kmow my graph is slopy but im pretty sure its B

  18. anonymous
    • one year ago
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    I think its a @welshfella

  19. welshfella
    • one year ago
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    Function 1 has the least minimum value thats for sure - - I'll recheck by graphing it on my calculator

  20. anonymous
    • one year ago
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    okay thank you

  21. welshfella
    • one year ago
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    Yes the minimum for Function 1 is at (-1,-3) so that makes it less than the minimum for Function 2.

  22. anonymous
    • one year ago
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    which would make the answer a

  23. welshfella
    • one year ago
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    yep

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