Quadratic Formula and Discriminant

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

How many x-intercepts does it have?

• 0

• 1

• 2

• 4

What is the discriminant in the Quadratic Formula?

• -b + 4ac

• b - 4ac

• -b² - 4ac

• b² - 4ac

What is the discriminant of the quadratic formula?

• b²-4a

• b²-4ac

• b-4ac

• b²-ac

Given the graph, what must the sign of the discriminant be?

• Positive

• Negative

• Zero

In the quadratic formula, if b²-4ac>0, then the quadratic equation has

• two imaginary solutions

• two different real solutions

• two equal real solutions

• none of these

Which of the following expressions represents the discriminant?

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

What is the formula for the discriminant?