Finding the Roots/Zeros from Calculator (Table)

Find the roots/zeros:

x² + 9x + 20 = 0

• x = -2, x = -10
• x = -3, x = -4
• x = -4, x = -5
• x = -4, x = -6

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What is another word for the solutions to a quadratic?

• y-intercept
• Axis of Symmetry
• Parabola
• Roots

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

The roots/zeros of a quadratic will cross which axis?

• x- axis
• y- axis

Tags

CCSS.HSA.APR.B.3

TRUE or FALSE
The quadratic will have 2 solutions if the parabola crosses the x-axis twice.

• TRUE
• FALSE

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

The zeros of the function
f(x) = 2x² − 4x − 6 are:

• 3 and 1
• 3 and -1
• -3 and 1
• -3 and -1

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What are the zeros of
m(x) = x² - 4x + 3

• -3 and -1
• 3 and 1
• 3 and -1
• -3 and 1

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What are the solutions to the equation:

x² - 8x - 24 = 0

HINT: Use substitution! Look at the last problem in your notes for extra help!

• 1

• 2

• 3

• 4

Tags

CCSS.HSA.REI.B.4

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 and x = 3

• x = 2 and x = -3

• The are no real roots
• x = 2 and x = 3

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What are the zeros of the quadratic function?
y = x² - 2x - 15

• x = -2
  x = -15
• x = -3
  x = 5
• x = 3
  x = -5
• x = 1
  x = -16

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

How many solutions (roots) does this graph have?

• one
• two
• no solutions
• cannot be determined

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11