Discriminat and Quadratic Formula

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

Tags

CCSS.HSA-REI.B.4B

The discriminant is

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

Tags

CCSS.HSA-REI.B.4B

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

What is the discriminant and how many solutions would this quadratic have?

x² - 6x + 9 = 0

• 0 so No Solutions

• 0 so 1 Solution

• 72 so 2 Solutions

• -72 so No Solution

What is the discriminant and how many solutions would this quadratic have?

6x² − 2x − 3 = 0

• 76; 2 solutions

• -76; 0 solutions

• -76; 2 soultions

• 76; 1 solution

What is the discriminant and how many solutions would this quadratic have?

-2x² − x − 1 = 0

• -7; 1 solution

• -7; 0 Solutions

• -7, 2 Solutions

• none of these

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

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Tags

CCSS.HSA-REI.B.4B