Polynomial Functions Lesson

What is another way to say "where a function crosses the x-axis"?

• x-intercept
• zero
• root
• all of these.

f(x)=x²-5
find f(-1)

• -4
• ^-6
• -7
• ⁵

f(x)=x³-5x²+3x-1
find f(-2)=
(You may use direct or synthetic substitution)

• -7
• x²-7x+17
• -35
• x²-3x-3

• 2
• 1
• 4
• None

• None
• 1
• 2
• 4

• The function is Odd
• The function is Even
• The function has 5 real zeros
• The function is Positive

• The function is Even
• The function is Positive
• The function has 4 real zeros
• The function has 3 real zeros

Classify the function:

• quadratic
• cubic 
• quartic
• linear

How many roots or zeros does the equation
f(x) = 5x⁴-8x³+4x²-6x+3 have?

• 3
• 4
• 5
• 0

Which of the following could be a zero of
f(x)=x⁴-10x³+35x²-50x+24

• x = -1
• x = 5
• x = -2
• x = 2