Quadratic

Either use quadratic formula or your calculator (2nd trace, zero, left guess, right guess, guess) to find out when this object hits the ground: 
h(t) = -16t² + 20t + 6

• -.25 seconds 

• 1.5 seconds 

• 6 seconds 

• .5 seconds 

An object flies through the air and follows a parabolic path. What does the y-axis represent? 

• time 

• height from the ground 

• horizontal distance 

• money 

What is the initial (starting) height of an object following this path?  h(t) = -16t² +20t + 6

• -16 feet 

• 0 feet

• 20 feet 

• 6 feet 

So for a projectile whose equation is written in standard form:  y = ax² + bx + c, which letter tells us the starting/initial height? 

• a

• b

• c

• x

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

Which of the following represents a quadratic function?

• 1

• 3

• 2

• 5

• 1

• 3

• 2

• 5

• 4