Graphs of Quadratics in Standard Form

Using the graph of the quadratic function, identify the vertex.

• (4, -6)

• (0, 2)

• (.5, 0)

• (7.5, 0)

Which of the following graphs appropriately marks the axis of symmetry?

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• 
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What is the y-intercept of this quadratic function: 7x² + 2x - 3 = y?

• 0

• 7

• 2

• -3

What is the axis of symmetry?

• A line whose equation is the x-coordinate of a parabola's vertex

• A central line that divides a parabola into mirror images

• A line that intersects a parabola at the vertex

• All of the above

Does the following graph have a maximum or minimum.

• Maximum

• Minimum

If we have the equation y=ax²+bx+c, how can we can find the x-coordinate of the vertex?

• -a

• -b/a

• b/2a

• -b/2a

What is the vertex of y=x²+4x+3?

• (2,1)

• (-2,1)

• (0,0)

• (-2,-1)

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

• up

• down

• both 

• neither

What is the equation for axis of symmetry?

• y=3

• x=3

• x=5

• x=1

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts