Discriminant of Quadratic Equations

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

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

___________

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

Tags

CCSS.HSA-REI.B.4B

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

Tags

CCSS.HSA-REI.B.4B

If the discriminant is positive, then the solution will be

• one real solution

• two real solutions

• no real solutions

• one imaginary solution

Tags

CCSS.HSA-REI.B.4B

A function has a discriminant of 4.
______________
How many x-intercepts does it have?

• 0
• 1
• 2
• 4

Tags

CCSS.HSA-REI.B.4B

A function has a discriminant of -3.
______________
How many x-intercepts does it have?

• 0
• 1
• 2
• 3

Tags

CCSS.HSA-REI.B.4B

A function has a discriminant of 0.
______________
How many x-intercepts does it have?

• 0
• 1
• 2
• 5

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

If the discriminant is positive, then the solution will be

• one real solution

• two real solutions

• no real solutions

Tags

CCSS.HSA-REI.B.4B

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

For the function below, is the discriminant positive, negative, or zero?
___________
y = x² + 2x + 3

• Positive
• Negative
• Zero
• Not Sure

Tags

CCSS.HSA-REI.B.4B