8-3/8-4 Quadratic Functions

Which of the following is a quadratic function?

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• 
• 
• 

What is the name of this form of a quadratic equation:

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 maximum/minimum of a parabola called?

• vertex
• point
• top
• bottom

What is the y-intercept ?

y = x² - 6x + 5

• (0, 8)

• (0, - 6)

• (5, 0)

• (0, 5)

Find the y-intercept of

f(x) = 2x² - 2x + 1

• (1,0)

• (-2,0)

• (0,1)

• (0, -1)

What is the y-intercept of this parabola?

• (−1, 3)

• (5, 0)

• (−2, 5)

• (0, 5)

What are the x-intercepts of this function?

• (1,0) and (5, 0)

• (0, 3) and (0, -5)

• (1, 5) and (5, 1)

• (0, 1) and (0, 5)

Which is the vertex of y = x²+ 16x + 71 ?

• V(-8, 7)

• V(-8, 3)

• V(8, 10)

• V(16, -2)

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

• up
• down
• Neither; it opens to the right.
• Neither; it opens to the left.