Finding X Intercepts of Graphed Functions

What does it mean to "find the zeros"?

• Finding where the graph crosses the x-axis

• Finding where the graph crosses the y-axis

• Finding the very bottom of the graph.

• Finding the very top of the graph.

Tags

CCSS.HSF-IF.C.7C

Tags

CCSS.HSA.APR.B.3

What are the x-intercepts of
f(x)=(x - 10)(x + 10)

• 10

• (10 , 0) and (-10 , 0)

• (0, -10) and (0, 10)

• 0

Tags

CCSS.HSF-IF.C.7C

What is another word for zeros?

• solutions

• x -intercepts

• roots

• All of the these!

Tags

CCSS.HSF-IF.C.7C

Determine the roots of the polynomial. 
f(x) = -x(x+1)(x-3)

• -1, 3

• 0, -1, 3

• 1, -3

• 0, -3, 1

Tags

CCSS.HSF-IF.C.7C

What are the zeros of the function?

• 4,1

• 3,1,-2,-5

• -3, -1, 2, 5

• -2,4

Tags

CCSS.HSA.APR.B.3

How many real zeros does the function have?

• None

• 2

• 3

• 4

Tags

CCSS.HSF-IF.C.7C

What is the degree of the function graphed here?

• 6

• 4

• 3

• 5

Write the cubic polynomial in factored form with 
zeros -1, 1, and 4

• (x + 1) (x - 1) (x - 4)

• x³ - 4x² - x + 4

• (x + 1) (x - 1) (x + 4)

• x³ - 4x² - x - 4

Tags

CCSS.HSA.APR.B.3

Factor and solve:
0=x³+11x²+24x

• x=8,3

• x=-8,-3

• x=-8,-3,0

• x=0, 8, -3

Tags

CCSS.HSF-IF.C.7C