NC.M3.U2.A-APR.3 & NC.M3.N-CN.9 Re-Test Lesson

Instructions:
Earn an 80% or higher on this lesson to be able to re-attempt the questions that you missed tied to this standard from our Unit 2 Test.

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NC Math 3 Unit 2 Re-Test Lesson
Standard: A-APR.3 & 6; NC.M3.N-CN.9

They are also the values of x that, when plugged into a function, cause the value of the function to be zero.

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Zeros are just x-intercepts

X-intercepts

Multiple Choice

The graph of f(x) is shown. Which statement about f(x) is true?

• The zero of f(x) is -3

• The zero of f(x) is 2

• The zeros of f(x) are -1 and 1

• The zeros of f(x) are -6 and 6

The Zeros and Factors of a Function are related

The degree of the function matches the number of zeros that the function has.

Some zeros may be "nonreal" which means that they will not be visible on the x-axis.

The function below has 6 zeros because it is of degree 6.

Multiple Select

A polynomial function contains the factors x, x-3, and x+1. Which graphs could represent the polynomial function. SELECT ALL THAT APPLY

Multiple Choice

If the function $$p\left(x\right)$$ has a zero at 5, which of the following is a true statement?

• (x-5) is a factor of p(x)

• (x+5) is a factor of p(x)

• p(x) has a

  y-intercept at (0,5)

• p(x) has 3 real solutions

Multiple Choice

Which of the polynomials below *could* have at most 6 zeros?

• $$f\left(x\right)=4x^4-5x^2-14$$

• $$f\left(x\right)=-2x^6+4x^4-3x^2+2x-9$$

• $$f\left(x\right)=3x^5-4x^3+2x-9$$

Multiple Choice

Is this division problem worked correctly?

• This is correct!
• This is incorrect!

Multiple Choice

Use long divison to solve

$$\left(6n^2-4n-16\right)\div\left(n-2\right)$$  

• n + 8

• 6n + 8

• 6n + 2

• n + 2