A3 - W12

Which quadratic function is represented by the graph?

• y = 2(x - 4)² + 5
• y = 2(x + 4)² + 5
• y = -2(x - 4)² + 5
• y = -2(x + 4)² + 5

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Find the vertex of the quadratic:
y = -2x² + 4x + 3

• (0, 3)
• (-1, 5)
• (1, 5)
• (1, -5)

What is the y-intercept of y=7x²+2x-1 ?

• (0, 1)
• (0, -1)
• (1, 0)
• (-1, 0)

What is the vertex of the quadratic function: y=1/2(x-3)²+8?

• (3,8)
• (-3,-8)
• (-3,8)
• (3,-8)

What is the equation of this function?

• f(x) = (x + 2)³
• f(x) = (x - 2)³
• f(x) = ∛(x + 2)
• f(x) = ∛(x - 2)

What is the following called? b²-4ac

• Axis of symmetry
• Quadratic Formula
• Vertex
• Discriminant

What does the discriminant tell us?

• The maximum or minimum
• The y-intercept
• The number and type of solutions
• The axis of symmetry

Find the axis of symmetry of f(x)= -2x²-16x+3.

• x= 4
• x=-4
• y= 4
• y=-4

Does the quadratic      y = - x² - 2x + 3  have a max/min vertex, and does the parabola open up/down?

• max/ opens down
• min/ opens up
• max/ opens up
• min/ opens down