2.1 Quadratics

Write the following quadratic expression in completed square form...

x² + 8x - 1

• (x + 4)² - 17

• (x + 4)² - 16

• (x + 4)² - 9

• (x + 4)² - 15

Write the following quadratic expression in completed square form...

x² + 10x + 13

• (x + 5)² - 12

• (x + 5)² + 3

• (x + 5)² + 12

• (x + 5)² - 15

What is the vertex of the graph?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

What is the domain of the graph?

• (-∞, 4]
• (4, ∞)
• (0, ∞)
• (-∞, ∞)

The graph of a quadratic function is called a

• Parabola
• Vertex
• Axis of Symmetry 
• Vertex Form

Find the vertex.  y = x²+ 16x + 71

• (-8, 7)

• (-8, 3)

• (8, 10)

• (16, -2)

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• symmetrical point for the vertex

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Does this parabola have a maximum or minimum?

• Maximum
• Minimum

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4