Unit 8 Test Review

What are the values of a, b, and c in the quadratic equation 3x² - 10 = -4x

• a = 3x² b = -10 c = -4x

• a = 3 b = -10 c = -4

• a = 3 b = -4 c = -10

• a = 3 b = 4 c = -10

What are the solutions for the equation 2x² + 16x = 18

• x = -1 and x = 9

• x = -9 and x = 1

• x = 2 and x= 18

• x = 2 and x = 16

How long was the rocket in the air?

• 3 seconds

• 5 seconds

• 9 seconds

• 6 seconds

If the rocket was at a height of 5 feet at 1 seconds, at what other time was the rocket at a height of 5 feet?

• It was never at 5 feet again.

• 6 seconds

• 5 sconds

• 3 seconds

Approximately, what was the highest that the rocket flew?

• 6 feet

• 9 feet

• 3 feet

• It never flew.

True or false:

The solution, root, x-intercept, and zero 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

What is the quadratic formula?

• 
• 
• 
• 

• x = 5 only
  

• x = -5 only
  

• x = 5 and -5
  

• There are no real solutions
  

When using factoring to solve a quadratic equation, what must be true?

• The equation must be set equal to 1.

• The equation must be set equal to 10.

• The equation must be set equal to 0.

• It is not necessary to set the equation equal to anything.

• 3

• 6

• 12

• 36