Pre-Calculus Quiz #8

If given the equation
y = 3(x + 5)² - 4,
what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

Identify the vertex and whether the graph opens up or down.

• (5, 2); opens up
• (5, 2); opens down
• (-5, 2); opens up
• (-5, 2); opens down

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

What is the vertex for the parabola represented by the equation
y = 2(x + 3)² - 8?

• (3, 8)
• (3, -8)
• (-3, 8)
• (-3, -8)

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

• up
• down

What is the name of this form:
y = ax² + bx + c

• vertex form
• standard form
• factored form
• zero form

What do we call the graph of a quadratic function?

• parabola
• linear
• cubic
• sinusoidal

What is the formula above primarily used for?

• Finding the axis of symmetry from standard form
• Finding the vertex from standard form
• Finding the vertex from vertex form
• Finding the vertex from standard form

What are the green dots called?

• axis of symmetry
• vertex
• parabola
• roots or x-intercepts

• x=-6 and x=-2

• x=6 and x=-2

• x=6 and x=2

• x=-6 and x=2