Quadratics Diagnostic Quiz

Solve the equation: x²+ 6x - 4 = 36

• x = -7, 7
• x = 4, -10
• x = -4 +- √7
• x = 10, -4

Solve by ANY method: x²−2x+11=0

• 1±i√10

• 1±√10

• -1±i√10

• -1±√10

Solve using any method2x² - 9x - 35 = 0

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

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 

What is the maximum/minimum of a parabola called?

• vertex
• point
• top
• bottom

What is the vertex of this parabola?

• (−1, 3)
• (−3, 11)
• (−2, 5)
• (0, 5)

Given the equation above, find h(-3).

• -13
• 5
• -23
• 23

The height of a water balloon that is launched into the air is given by h(t) = -5t² + 40t + 2. From what height was the balloon released?

• 2 meters

• 5 meters

• 40 meters

• 20 meters

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation

s(t) = –16t² + 64t + 80.

What will be the object's maximum height?

• 2 ft

• 80 ft

• 144 ft

• 64 ft

What is the discriminant?