Quadratic Functions Operations

What is the formula to find the discriminant of a quadratic?

• b²-4ac

• b-4ac

• b+4ac

• b²+4ac

Tags

CCSS.HSA-REI.B.4B

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

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

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

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

Use the quadratic formula to solve:

5x² - 8x + 2 = 0

• 1.29

• .31

• .21

• -1.82

• None of the Above

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve:

-5x² + 5x + 7 = 0

• -0.785

• 1.785

• -0.521

• 1.921

• None of the Above

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve:

-5x² + 5x = -1

• -0.171

• 1.172

• 0.276

• 0.724

• None of the Above

Select the solution(s) to the proportion.

• -6

• 6

• 2.49

• -14.49

Tags

CCSS.HSA.REI.A.2