4.8 Modeling Real-World Data with Polynomial Functions

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Presentation transcript:

4.8 Modeling Real-World Data with Polynomial Functions Objectives: Write polynomial functions to model real-world data. Use polynomial functions to interpret real-world data.

Linear Quadratic Cubic Quartic y=ax+b y=ax²+bx+c y=ax³… y=ax^4… General Shapes → Direction Changes→ 0 1 2 3

Ex. 1) Determine the type of polynomial function that could be used to represent the data in each scatter plot.

Ex. 2) x f(x) -2 -23 -1.5 -7.9 -1 -0.5 3.5 4.1 0.5 2.9 1 2.1 1.5 2.5 2 5.8 14.1 3 28 Use a graphing calculator to write a polynomial function to model the set of data. See example 3 in book on page 260.