Quadratic Functions in Vertex Form

Which equation has a vertex of (-3, 4)?

• y = 2(x+3)² + 4
• y = (x+3)² - 4
• y = (x-3)² + 4
• y = 2(x - 3)² + 4

The graph of a quadratic function is called a

• Parabola
• Vertex
• Axis of Symmetry 
• Vertex Form

Which of the following equations matches vertex form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

Which of the following equations matches standard form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

Given the equation for this parabola:
 y=-(x-4)²-3,
does this parabola have a maximum or minimum value?

• Maximum
• Minimum

What's the y-intercept of y = 3x²- 6x + 4?

HINT: Use your calculator to graph it.

• (4,0)

• (-4,0)

• (0,-4)

• (0,4)

What is the vertex of y=x²+4x+3?

HINT: Use your calculator to graph it.

• (2,1)

• (-2,1)

• (0,0)

• (-2,-1)

What is the axis of symmetry of y=2x²-4x+9?

• x = 1
• x = -1
• x = -2
• x = 4

The axis of symmetry is the ​ (a)   value of the vertex and the maximum or minimum is the ​ (b)   value of the vertex.

• x
• y

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

• parabola
• vertex
• graph
• point