8.04 & 8.05 Quiz

Which graph shows a quadratic equation that has a discriminant = 0?

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• 
• 
• 

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

• Positive
• Negative
• Zero
• Not Sure

The formula to determine how many solutions a quadratic equation has is called the discriminant which is...

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

.How many roots does this parabola have?

• 3

• 2

• 0

• 1

True or False:

The terms: solution, root, x-intercept, and zeros of a problem mean the same thing.

• True

• False

What is the discriminant of this equation? Use b² - 4ac. If there is no c value, use 0.

3x² + 8x = 0

• 64

• 52

• 9

• 0

• Discriminant: 0

  1 real solution

• Discriminant: -47

  No real solution

• Discriminant: -65

  No real solution

• Discriminant: 65

  2 Real Solutions

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

If the discriminant of a quadratic is -106 then there are ​​ (a)   real solution(s).

• One
• Two
• No

If the discriminant of a quadratic is 47 then there are ​ (a)   real solution(s).

• Two
• One
• No