Unit 7 Lesson 14 Practice Assignment

Partner 1

What is the vertex.

y = 3(x + 2)² - 1

• (2, -1)

• (-2, -1)

• (3, 2)

• (-3, 2)

Partner 2

What is the vertex?

y = -(x + 7)² - 3

• (7, 3)

• (7, -3)

• (-7, 3)

• (-7, -3)

Partner 2

What is the axis of symmetry of the given function?

• y = 1

• y = -1

• x = 1

• x = -1

Partner 1

What is the equation of this graph?

• f(x) = (x -5)² + 1

• f(x) = (x - 1)² - 5

• f(x) = (x + 1)² - 5

• f(x) = (x + 5)² +1

Partner 2

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

Partner 1

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 = -16t² + 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

Partner 2

A frog is sitting on the ground when he is scared by a big dog. His movement is modeled by the equation h = -6t² + 6t where h is the frog's height at any given time, t . How many seconds until the frog is back on the ground?

• 0.5 seconds

• 1 second

• 1.5 seconds

• 2 seconds

• 3 seconds

Partner 2

Jacob threw a water balloon at a rate of h = - 3x²+ 9x + 2, where h is the height and x is the time in seconds. What is the maximum height of the water balloon?

• 8.75 feet

• 4 feet

• 11.5 feet

• 1.5 feet

Partner 1

Ashlyn threw a paper air plane out the window at a rate of

y = -2x² + 4x + 34, where y is the height and x is the time in seconds. After how many seconds will the paper air plane be at its maximum height?

• 2 seconds

• 1 second

• 1.5 seconds

• 2.5 seconds

Partner 2

Kaylee threw her binder out of her car window (because binder quizzes give her anxiety) The rate of a binder flew at a rate of y = -x² + 4x + 7. After how many seconds will the binder be at the maximum height?

• 2 seconds

• 1.5 seconds

• 4.3 seconds

• 2.5 seconds