4-14-2021 Algebra 1: Quiz (8.2-8.4)

What is the vertex?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Determine the vertex of the parabola:
y = 5x² - 20x + 13

• (5, -7)
• (-2, -7)
• (2, -7)
• (-7, -2)

Convert the equation from vertex form (shown) to standard form:

y = -3(x + 5)² - 4

Formula: y = ax² + bx + c

• y = 9x² - 15x + 21

• y = -3x² - 75x - 4

• y = 9x² + 90x + 221

• y = -3x² - 30x - 79

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

When a parabola opens downward the vertex is

• a minimum
• a maximum
• a vertex
• a parabola

Does the equation open or or down? 
Y = -3x² +7x - 2

• up
• down

Which of the following equations is in vertex form?

• f(x) = x² + 6x - 2
• f(x) = (x - 1)² + 2

The graph of a quadratic function is called a

• Parabola
• Vertex
• Axis of Symmetry 
• Vertex Form