Discriminant and FTA

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

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

___________

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

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

• 76

• -7

• 9

• none of these

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

• 76

• 29

• 68

• none of these

Mathematical Equivalence

ON

Which graph has a discriminant = 0?

• None of them

• Red

• Blue

• Green

Find the discriminant: 3k² + k - 1 = 0

• 36

• 13

• -20

• -11

Mathematical Equivalence

ON

Determine the value of the discriminant

x² + 7x + 13=0

• 101

• 3

• -101

• -3