Module 8 review quadratics

Name the x-intercept(s)?

• 0
• 4
• 2
• 0 and 4

What is the green dashed line called?

• roots or x-intercepts
• parabola
• axis of symmetry
• y intercept

Tags

CCSS.HSF-IF.C.7A

Which of the following best describes at the zeros?

• The dolphins are at the surface of the water.
• The dolphins are at the furthest distance from the water.
• The dolphins are increasing their distance from the water.
• The dolphins are under water.

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

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

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

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

What are the x-intercept(s) of the function
g(x) = -9(x-3)(x+2)?

• (3,0) and (-2,0)
• (-3,0) and (2,0)
• (3,-2)
• (-9,0), (3,0), and (-2,0)

Tags

CCSS.HSA.APR.B.3

What is the vertex of the function
f(x) = -x²+8x-10?

• (4,6)
• (4,38)
• (-4, -10)
• (8, -10)

Ed hits a shot off the tee that has a height modeled by the function f(t) = -16t² + 112t.  What is the height of the ball after 1 second?

• 0 ft
• 160 ft
• 96 ft
• 112 ft

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.C.7

What algebraic term are you solving for if the word problem is: The equation for leaping off a cliff is h = -16t^2 + 8t +24.  How long will it take for you to hit the water?

• Roots (Solutions)
• Axis of Symmetry
• Vertex
• y-intercept

A dolphin jumps from the water at at initial velocity of 16 feet per second. The equation h = -8t² + 16t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps?

• 1 foot

• 5 feet

• 7 feet

• 8 feet

• 12 feet

Members of the math club launch a model rocket from ground level with an initial velocity of 96 ft/sec. This can be modeled with the function h(t) = -16t² + 96t. When does the maximum height occur?

• 6 seconds

• 3 seconds

• 145 seconds

• 160 seconds