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anonymous

  • one year ago

Please help! Fan and Medal! Consider the graph of f(x) below. https://wca.sooschools.com/media/g_alg02_ccss_2014/9/img_g_alg02u09c03l20d_03.gif Write the equation of f(x), and classify the function as linear, quadratic, cubic, exponential, or logarithmic.

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  1. sloppycanada
    • one year ago
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    First step - finding out what type of graph it is. Can we eliminate any of them?

  2. anonymous
    • one year ago
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    Its deffinitely not linear or exponential @sloppycanada

  3. anonymous
    • one year ago
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    I think its cubic

  4. sloppycanada
    • one year ago
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    Can you give me a reason as to why it would be logarithmic?

  5. anonymous
    • one year ago
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    I really dont know @sloppycanada

  6. anonymous
    • one year ago
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    ik this ill help

  7. Loser66
    • one year ago
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    with that shape, it is ALWAYS a cubic

  8. Loser66
    • one year ago
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    with the positive coefficient of x^3

  9. Loser66
    • one year ago
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    Hence, the standard formula is \(f(x) =ax^3+bx^2+cx +d\)

  10. Loser66
    • one year ago
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    All you need is picking 4 special points to plug into the standard form. Hint: pick x -intercept and y intercept points

  11. anonymous
    • one year ago
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    gtfo loser you can help nobody

  12. Loser66
    • one year ago
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    I do one for you as example:

  13. anonymous
    • one year ago
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    do you have a calculator?

  14. anonymous
    • one year ago
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    Madison.bush ?

  15. anonymous
    • one year ago
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    its not linear

  16. Loser66
    • one year ago
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    the first x-intercept is (-1,0) , that is x =-1, y =0 hence plug in, you have \(0= a(-1)^3 +b*(-1)^2+c(-1) +d\)

  17. anonymous
    • one year ago
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    Yes i do have a calculator @adriangomez

  18. anonymous
    • one year ago
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    so it is cubic

  19. anonymous
    • one year ago
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    we just need to find a equation im i correct

  20. Loser66
    • one year ago
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    Do the same with other points to get 4 equations and solve for a, b, c , d Btw, calculator is helpless here. No way to find the equation of it by calculator.

  21. anonymous
    • one year ago
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    Okay thank you @Loser66

  22. anonymous
    • one year ago
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    just put the numbers in and trace it @madison.bush

  23. anonymous
    • one year ago
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    on calculator

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