2.1.1b Quadratics in Standard Form

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

• up
• down
• neither
• Can't tell

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

• (0, 6)
• (0, -6)
• (6, 0)
• (-6, 0)

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

What is the vertex?
f(x) = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

What is the vertex of
y= x² + 4x + 3?
Hint: find axis of Symmetry then plug in to find y value of the vertex.

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)

What is the vertex of
y= x² - 8x + 14 ?
Hint: find axis of Symmetry then plug in to find y value of the vertex.

• (2, 4)
• (-4, -2)
• (4, -2)
• (-2, 4)

What do we call the graph of a quadratic?

• funny curved thingy
• vertex
• equation
• parabola

Identify the 'b' value: 
y = 16x² - 8x -24

• 16
• -8
• 8
• -24

What is the axis of symmetry
of:   y= 2x² + 8x + 9

• x = 2
• x = -1
• x = -2
• x = 4

Identify the 'a' value:
y = 16x² - 8x -24

• 16
• 8
• -8
• -24