Building Quadratics

Find the two x-intercepts of y = (2x - 3)(x - 8)

• -8

• 2/3

• 3/2

• 8

Tags

CCSS.HSF-IF.C.7C

Which equation would work for the graph

• y = 3x²+7x - 8

• y = 8x + 9

• y = -14x - 10

• y = -2x²+5x - 7

Find the vertex of y = 10x²-60x +75

• (-3,15)

• (-3, 345)

• (3, -15)

• (3,15)

Given the zeros of 9 and -7 give a quadratic equation

• x²-16x+63=0

• x²-2x-63=0

• x²+2x-63=0

• x²+16x+62=0

Tags

CCSS.HSA.APR.B.3

Find the zeros of 9x²-100=0

• -3 and 10

• 3/10 and -3/10

• -10/3 and 10/3

• 3 and 10

Tags

CCSS.8.EE.A.2

You are cliff diving with some friends. Your path to the water is modeled by h(t) = -16t^2 + 8t +24. How long will it take for you to hit the water? What are you solving for?

• x-intercept

• Axis of Symmetry

• y value of the Vertex

• y-intercept

A dolphin jumps from the water. The function h(t) = -16t² + 80t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps? What are you solving for?

• x coordinate of the Vertex

• Axis of Symmetry

• y coordinate of the vertex

• The y coordinate in the x-intercept

An object in launched in the air is modeled by the function

s(t) = –16t² + 64t + 80, where t is the time in seconds. From what height was the object launched? What are you solving for?

• 64 feet

• 2 feet

• 80 feet

• 144 feet

If a baseball is thrown upward at a rate of h(t) = -16t²+208t+6. How long does it take for the ball to reach its maximum height?

• 578 seconds

• 208 seconds

• 6.5 seconds

• 13 seconds

A ball is thrown downward from a window in a tall building. Its position at time t in seconds is s(t) = 16t² + 32t where s is in feet. How long (to the nearest tenth) will it take the ball to fall 224 feet?

• 2.7 sec.

• 8.4 sec.

• 3.7 sec.

• 2.9 sec.