Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 5 - Polynomials and Polynomial Functions - 5-1 Polynomial Functions - Practice and Problem-Solving Exercises: 47

Answer

Sign of leading coefficient: Negative Least Possible Degree: Three

Work Step by Step

RECALL: The end behavior of the graph of a polynomial function is dependent on its leading term $ax^{n}$ and its degree $n$. (i) If the leading term's degree is even: (a) the end behavior is up and up if the leading coefficient is positive and (b) the end behavior is down and down if the leading coefficient is negative. (ii) If the leading term's degree is odd: (a) the end behavior is down and up if the leading coefficient is positive and (b) the end behavior is up and down if the leading coefficient is negative. The end behavior is up, down. Therefore the sign of the leading coefficient is negative and the degree is odd. In general, the graph of a polynomial function of degree $n(nā‰„1)$ has at most $nāˆ’1 $ turning points. The graph of a polynomial function of odd degree has an even number of turning points. The graph of a polynomial function of even degree has an odd number of turning points. Degree 1: Zero turning points Degree 2: One turning point Degree 3: Zero or two turning points Since there are no turning points but the graph is not linear, the least possible degree is three. Therefore, the sign of the leading coefficient is negative and the least possible degree of the polynomial function is three.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.