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Home > A2C > Chapter 9 > Lesson 9.1.1 > Problem 9-18

9-18.
  1. Which of the following equations are polynomial functions? For each one that is not, justify why not. Homework Help ✎

    1. y = 3x2 + 2x2 + x

    2. y = (x − 1)2(x − 2)2

    3. y = x2 + 2 x

    4. y = 3x − 1

    5. y = (x − 2)2 − 1

    6. y2 = (x − 2)2 − 1

    7. y = x

    8. y = −7

The equations in (c), (f), and (g) are not polynomials. Refer to the Math Notes box for this lesson if you are confused.