Unit 4 CFA Review

What do we call the highest or lowest point of a quadratic?

• parabola
• vertex
• graph
• point

Identify the y-intercept

• (0, -3)

• (0, 1)

• (0, 3)

• (2, 1)

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

What is the domain of the graph?

• All real numbers
• To infinity and beyond
• y ≥ -1
• x ≥ 0

What is the domain and the range for the graph?

• Domain : -2 ≤ x ≤ 2
  Range : 0 ≤ y ≤ 4
• Domain : 0 ≤ x ≤ 4
  Range : -2 ≤ y ≤ 2
• Domain : All real #s
  Range : y ≤ 4
• Domain : -2 ≤ x ≤ 2
  Range : y ≤ 4

What do we call the graph of a quadratic function?

• parabola
• linear
• cubic
• sinusoidal

What is the axis of symmetry?

• x = - 4
• x = - 2
• x = 0
• x = 4

Find the axis of symmetry for f(x) = x² + 4x - 5 

• x = 2
• x = -2
• x = 4
• x = -4

What is the vertex?

• (0, - 1)
• (0, 0.5)
• (-1, 0)
• (0.5, 0)

What is the vertex of y=x²+4x+3?

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)