Understanding quadratic equations in one variable

If the discriminant is positive, then the function will have:

• one real solution

• two real solutions

• no real solutions

• one imaginary solution

What is the discriminant for:

 $6r^2\ -\ 7r\ -4\ =\ 6$  

• 289

• 49

• 7

• 0

Using the discriminant formula  $b^{2\ }-4ac$   $x^2-3x+5=0$  will have ...

• no solution

• 1 solution

• 2 solutions

• infinitely many solutions

What is true about the discriminant?

• It is Negative
• It is positive
• It is equal to ZERO
• It has two solutions

How many solutions would a quadratic have if D > 0?

• No Real Solution

• 1 Real Solution

• 2 Real Solutions

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

-4x² - 8x - 8 = -4

• 0, No Solutions

• 0, 1 Solution

• 128, 2 Solutions

• 128, 1 Solution

If the discriminant is equal to -2, how many solutions are there?

• No REAL Solutions/ 2 imaginary solutions

• 1 Solution

• 2 Real Solutions

• Infinite Solutions

What does the discriminant tell us?

Select TWO

• How many solutions there are

• The type of solutions there are

• What the solutions actually are

• What the x and y intercepts are

Which of the following has real roots?

• 
  

  $x^2+2\sqrt{3x}-1=0$
  

• $x^2+2x+4=0$

• $x^2-x+1=0$

• $3x^2-2x+2$

What is the Discriminant AND how many solutions would this quadratic have?

4x² + 6x - 4 = 0

• -28, No Solutions

• 28, 2 Solutions

• 100, 2 Solutions

• -100, No Solutions