S22 Alg 2 U4 Q2

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

• (0, 6)
• (0, -6)
• (6, 0)
• (-6, 0)

Tags

CCSS.HSF-IF.C.7A

What do we call the turning point of a quadratic?

• parabola
• vertex
• graph
• point

The standard form of a quadratic function is

• y = ax² + bx + c

• a(x - h)² + k

• y - y₁ = m(x - x₁)

• Ax + By = C

If a is positive in the quadratic function, which way does the parabola open?

• up

• down

• left

• right

Tags

CCSS.HSF-IF.C.7A

Identify a, b, and c if y = 3x² + 5x - 8

• a = 3, b = 5, c = - 8

• a = 3, b = - 8, c = 5

• a = 3x², b = 5x,

  c = - 8

• a = 3x² , b = - 8,

  c = 5x

• up

• down

Tags

CCSS.HSF-IF.C.7A

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

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

• x = -4
• x = 4
• y = 4
• y = -4

What is the range? y = -x² - 4x + 12.

What information do you need to write an equation in vertex form?

More than one correct response: Select all that apply.

• an ordered pair anywhere on the parabola

• the coordinates for the vertex

• the formula for standard form

• the formula for vertex form