Discriminant (2/26-27/25)

What is the formula for the discriminant?

• x = -b/2a

• b² - 4ac

• a² + b² = c²

• x = [-b±√(b²-4ac)]/2a

Tags

CCSS.HSA-REI.B.4B

1 What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

Tags

CCSS.HSA-REI.B.4B

2 A function has a discriminant of 4.

How many x-intercepts does it have?

• 0

• 1

• 2

• 4

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

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

• Positive

• Negative

• Zero

Tags

CCSS.HSA-REI.B.4B

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

• Positive

• Negative

• Zero

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What is the discriminant of 6x² − 2x − 3 = 0

• 76

• 29

• 68

• 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

When in standard form, what is the value of a, b and c in this quadratic?

8x² + 3x - 6 = 3x

• a = 8 b = 0 c = -6

• a = 8 b = 6 c = -6

• a = 8 b = -6 c = 0

• a = 8 b = 3 c = -6

• 41

• 51

• 61

Tags

CCSS.HSA-REI.B.4B

A function has a discriminant of 25.
______________
How many solutions does it have?

• 0
• 1
• 2
• 5

Tags

CCSS.HSA-REI.B.4B