Quadratics Story

FILL IN THE BLANKS. This shape of graph is called a _______ because this function is ________.

• quadratic; parabola

• parabola; quadratic

• curve; exponential

• line; linear

When will the coin reach it's maximum height?

• 0 seconds

• 4 seconds

• 8 seconds

• 10 seconds

The profit from selling local ballet tickets depends on the ticket price. Using past receipts, we find that the profit can be modeled by the function: p= -15x² +600x +60 What is the maximum profit you can make from selling tickets?

• $6060

• $20

• $600

• $10,250

A ball is thrown into the air with an upward velocity of 40ft/s. Its height h in feet after t seconds is given by the function :

h(t) = -16t² + 40t + 10

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

• 1.25 seconds

• 1.4 seconds

• 2.5 seconds

• 2 seconds

Identify the axis of symmetry.  (a)   What is the y-intercept?​ (b)   What is the minimum​ (c)   What is f(-3)​ (d)  

• x=-1

• (0,5)

• 4

• y=-1

• x=4

• y=4

• (5,0)

• 8

Identify the axis of symmetry.  (a)   What is the y-intercept?​ (b)   What is the minimum​ (c)   ​ What is f(-3)​ (d)  

• x=-1

• (0,5)

• 4

• y=-1

• x=4

• y=4

• (5,0)

• 8

Analyze the given graph and the determine the correct function.​ (a)   ​ (b)  

• x(x-2)

• x+(x-2)

• (x+4)(x+5)

• (x-0)

Which of the following represents a quadratic function?

Identify the axis of symmetry.  (a)   What is the y-intercept?​ (b)   What is the minimum​ (c)   ​ What is f(-3)​ (d)  

• x=-1

• (0,5)

• 4

• y=-1

• x=4

• y=4

• (5,0)

• 8

The graph is concave (a)   ​

The vertex is ​ (b)  

The y-intercept is ​ (c)  

The line of symmetry is ​ (d)  

• down

• up

• (2,8)

• (-2,0)

• (6,0)

• (0,6)

• (8,2)

• x=2

• x=8