Quadratic Determinant

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

For the function above, is the discriminant positive, negative, or zero?

• Positive

• Negative

• Zero

• Not Sure

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

For the function above, is the discriminant positive, negative, or zero?

• Positive

• Negative

• Zero

• Not Sure

Tags

CCSS.HSA-REI.B.4B

Determine the value of the discriminant and describe the number and type roots for the following:

x² + 7x + 13

• 101, 2 real roots

• 3, 2 real roots

• -101, 2 imaginary roots

• -3, 2 imaginary roots

Tags

CCSS.HSA-REI.B.4B

How many roots does this parabola have?

• 3

• 2

• 0

• 1

Which graph has a discriminant = 0?

• None of them

• Red

• Blue

• Green

Which of the following statements are true about the discriminant?

• A negative discriminant means the quadratic doesn't exist.

• A positive discriminant means the quadratic equation is solvable by factoring.

• A discriminant of zero means that there are no solutions.

• A non-zero perfect square discriminant means there are two solutions.

• The discriminant doesn't exist if the quadratic relation opens down.

Tags

CCSS.HSA-REI.B.4B

The discriminant of
2x² -3x - 5 is ?

• -10 and -3

• -31

• 49

• 31

Tags

CCSS.HSA-REI.B.4B

In the quadratic formula, if b²-4ac>0, then the quadratic equation has

• two imaginary solutions

• two different real solutions

• two equal real solutions

• none of these

Tags

CCSS.HSA-REI.B.4B