Test Review on Quadratics Standard and Vertex Form

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• line of dashes

Tags

CCSS.HSF-IF.C.7A

Maximum or Minimum

• Maximum

• Minimum

Find the vertex of
f(x) = -x² - 4x + 12

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)

What direction is the following equation opening?
y=-3x²-7x+8

• Up

• Down

• Left

• Right

Tags

CCSS.HSF-IF.C.7A

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

• y = -2

• x = 3

• x = -3

• y = 2

Heather dropped a water balloon over the side of her school building from a height of 80 feet. The approximate height of the balloon at any point during its fall can be represented by the following quadratic equation: h = -16t^2 + 80 About how long did it take for the balloon to hit the ground?

• 1.73 seconds

• 2.24 seconds

• 2.45 seconds

• 2.83 seconds

What is the vertex of this parabola?

• (4, 1)

• (1, 4)

• (0, 2)

• (0, 0)

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation

s(t) = –16t² + 64t + 80

What will be the object's maximum height?

• 2 ft

• 80 ft

• 144 ft

• 64 ft

State the vertex of:

y = -2(x - 5)² - 9

• (-5, -9)

• (5, -9)

• (-10, -9)

• (10, 9)

Write a quadratic function in vertex form that has the given vertex and passes through the given point. Vertex: (-5, 7) Point: (-3, -5)

• y = -3(x + 5)² + 7

• y = -2(x - 7)² - 5

• y = -1/3(x + 5)² + 7

• y = (x + 7)² + 5