Quadratic Functions

Does this graph in the back have maximum or minimum value?

• maximum
• minimum
• neither
• both

What is the axis of symmetry?

• the slope of the graph
• the dividing line for a parabola
• a way to spin my pencil
• the x-axis

Is this a max or min?

• max
• min
• cannot be determined

What do we call the graph of a quadratic function?

• parabola
• linear
• cubic
• sinusoidal

What is the vertex of this parabola?

• (−1, 3)
• (−3, 11)
• (−2, 5)
• (0, 5)

What is the y-intercept of this parabola?

• (−1, 3)
• (−3, 11)
• (−2, 5)
• (0, 5)

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.

Where is the axis of symmetry for this parabola?

• x = −1
• x = 0
• y = 3
• x = −3

Find the vertex of

 $y=3\left(x-2\right)^2+3$  

•  $\left(2,3\right)$  

•  $\left(-2,3\right)$  

•  $\left(2,-3\right)$  

•  $\left(-2,-3\right)$  

Find the vertex of

 $y=-\frac{1}{2}\left(x+11\right)^2-4$  

•  $\left(-11,-4\right)$  

•  $\left(11,-4\right)$  

•  $\left(11,4\right)$  

•  $\left(-11,4\right)$