Find Quadratic Function...2

Discussion in 'Off-Topic Chat' started by nycmathguy, Aug 4, 2022.

  1. nycmathguy

    nycmathguy

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    How do we find a quadratic function given its graph?

    Screenshot_20220803-202458_Samsung Internet.jpg
     
    nycmathguy, Aug 4, 2022
    #1
  2. nycmathguy

    MathLover1

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    use general formula for parabola: y=ax^2+bx+c
    or vertex form formula for parabola: y=(x-h)^2+k

    choose at least 3 points from the graph, plug in formula above, set the system and solve for a, b, and c (if you use general formula)
    or sole for h and k if you use vertex form formula

    hint: take a lose look on a graph and decide which formula is better to use
     
    MathLover1, Aug 4, 2022
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  3. nycmathguy

    nycmathguy

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    I think the vertex form formula is the best to use.
     
    nycmathguy, Aug 4, 2022
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  4. nycmathguy

    nycmathguy

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    What about this one? I say use the vertex form formula, too. Yes?

    Find Quadratic Function...1
     
    nycmathguy, Aug 4, 2022
    #4
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