The Discriminant QUIZ

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 of solutions

• The axis of symmetry

Tags

CCSS.HSA-REI.B.4B

If the discriminant is a negative number, the quadratic function has no real roots.

• True

• False

Tags

CCSS.HSA-REI.B.4B

If the discriminant is zero you will have

• no real solutions

• two real solutions

• 1 real solution

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

Determine the value of the discriminant and determine the number of real solutions for the following:
 $x^2+2x-63=0$  

• 256,  2 real solutions

• - 256, 0 real solution

• 248, 2 real solutions

• -248, 0 real solution

Tags

CCSS.HSA-REI.B.4B

Determine the value of the discriminant and name the nature of the roots for the following:
x² + 7x + 13
Remember:  b² - 4ac

• 400, 2 real root 
• 0, 1 real root with a multiplicity of 2
• -400, 2 imaginary roots
• -3, 2 imaginary roots

Tags

CCSS.HSA-REI.B.4B

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

• 76

• -7

• 9

• none of these

Tags

CCSS.HSA-REI.B.4B

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

• 76

• 29

• 68

• none of these

Tags

CCSS.HSA-REI.B.4B

Find the discriminant of the following equation.

3x² -x- 2 = 0

• 5
• 25
• -24
• -26

Tags

CCSS.HSA-REI.B.4B