Solving Quadratics by Graphing

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

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

Tags

CCSS.HSA.APR.B.3

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.D.11

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

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Calculate the roots of the quadratic.

• x = 6 and 3

• x = 1 and 0

• x = 0 and 3

• x = 3 and 1

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Calculate the zeros of the quadratic.

• x = 2 and -3
• x = 0 and 9/4
• x = 0 and 4/9
• x = 1/2 and 1/3

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What are the zeros of x²+9x+14

• 2, 7
• -2, -7
• 2, -7
• -2, 7

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Which of the following is a solution to the function?  (x - 8)(x - 9) = 0

• 8
• -9
• -17
• 0

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

What are the solutions of this graph?

• -2 and 3

• -1/2 and -6

• -2 and -6

• 3 and -6

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

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.3

CCSS.HSA.REI.B.4