In Exercises 1–10, determine which functions are polynomial functions. For those that are, identify the degree. f(x)=x^1/3 −4x^2+7
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
4. Polynomial Functions
Graphing Polynomial Functions
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Based on the known points plotted on the graph, determine what intervals the graph should be broken into.
Plotted points are: (−3,0),(0,1),(2,0), & (5,0)

A
−∞→−3,−3→0,0→5,5→∞
B
−∞→−3,−3→0,0→2,2→5,5→∞
C
−∞→−3,−3→0,0→2,2→∞
D
−∞→0,0→2,2→5,5→∞

1
Identify the plotted points on the graph: (-3,0), (0,1), (2,0), and (5,0). These points are crucial for determining the intervals.
Recognize that the x-values of these points are where the graph changes behavior or crosses the x-axis. These x-values are -3, 0, 2, and 5.
Determine the intervals based on these x-values. The graph should be broken into intervals where each segment represents a distinct behavior of the function.
The intervals are: (-∞, -3), (-3, 0), (0, 2), (2, 5), and (5, ∞). These intervals are chosen because they include all the critical x-values where the graph changes.
Verify that these intervals match the correct answer provided: (-∞, -3), (-3, 0), (0, 2), (2, 5), and (5, ∞). This confirms the intervals are correctly identified based on the plotted points.
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Graphing Polynomial Functions practice set
