Quadratic Formula Review

The discriminant is

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

Tags

CCSS.HSA-REI.B.4B

What does the discriminant determine?

• Whether the graph goes up or down

• The vertex

• The number of Solutions

• The y-intercept

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

The discriminant of a quadratic is -3.

How many x-intercepts does it have?

• 0

• 1

• 2

• 3

Tags

CCSS.HSA-REI.B.4B

Is the discriminant of this quadratic positive, negative, or zero?

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

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

If the discriminant is negative, how many solutions does the graph have?

• 2

• 1

• 0

Tags

CCSS.HSA-REI.B.4B

The Quadratic Formula can be used to solve quadratic equations that cannot be factored.

• True

• False

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

• Positive

• Negative

• Zero

• Not Sure

Tags

CCSS.HSA-REI.B.4B

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

• Positive

• Negative

• Zero

• Not Sure