Quadratic Functions Quiz

What is the y intercept for the equation:
y = -8x² + 3x - 7

• (0, -8)
• (0, 3)
• (0, 7)
• (0, -7)

Tags

CCSS.HSA.REI.B.4

If given the equation
y = 3(x + 5)² - 4, what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Identify the vertex and whether the graph opens up or down.

• (-1, 4); opens up
• (-1, 4); opens down
• (1, 4); opens up
• (1, 4); opens down

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

True or false:
The solution, root, x-intercept, and zero of a problem are all the same thing

• True
• False, because the solution and root are the same but the x-intercept and zero are different
• False, because the x-intercept and root are the same but the zero and solution are different
• False, they are all different

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

Barry throws a rock off a bridge into the water below. The height of the rock, h feet, at time t seconds is modeled by the equation h(t) = -16t² - 64t + 192 for t ≥ 0. How long will it take the rock to hit the water?

• 2 seconds

• 3 seconds

• 4 seconds

• -6 seconds

The height of an object thrown into the air can be modeled by the formula h(t) = -16t² + 70t + 95, where h(t) is in feet after t seconds.
What is the height of the object after 5 seconds?

• 95 feet
• 45 feet
• 70 feet
• 171.56 feet

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

A ball is thrown into the air with an upward velocity of 64 ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 64t + 960.

How many seconds did it take for the ball to reach its maximum height?

• 10 seconds

• 64 seconds

• 960 seconds

• 2 seconds

A ball is thrown into the air with an upward velocity of 64ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 64t + 960.

What is the maximum height?

• 960 feet

• 1008 feet

• 1024 feet

• 1152 feet

A ball is thrown into the air with an upward velocity of 64 ft/s. Its height, h, after t seconds is given by the function

h = -16t² + 64t + 960.

When will the ball hit the ground?

• 10 seconds

• 2 seconds

• 5 seconds

• 7 seconds