Discriminant
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the discriminant in a quadratic equation?
Back
The discriminant is the expression b² - 4ac in the quadratic formula, which determines the nature of the roots of the equation.
Tags
CCSS.HSA-REI.B.4B
2.
FLASHCARD QUESTION
Front
What does a positive discriminant indicate about the roots of a quadratic equation?
Back
A positive discriminant indicates that the quadratic equation has two distinct real roots.
Tags
CCSS.HSA-REI.B.4B
3.
FLASHCARD QUESTION
Front
What does a zero discriminant indicate about the roots of a quadratic equation?
Back
A zero discriminant indicates that the quadratic equation has exactly one real repeated root.
Tags
CCSS.HSA-REI.B.4B
4.
FLASHCARD QUESTION
Front
What does a negative discriminant indicate about the roots of a quadratic equation?
Back
A negative discriminant indicates that the quadratic equation has two complex (imaginary) roots.
Tags
CCSS.HSA-REI.B.4B
5.
FLASHCARD QUESTION
Front
How do you calculate the discriminant for the quadratic equation ax² + bx + c?
Back
The discriminant is calculated using the formula D = b² - 4ac.
Tags
CCSS.HSA-REI.B.4B
6.
FLASHCARD QUESTION
Front
If a quadratic equation has a discriminant of -3, how many x-intercepts does it have?
Back
It has 0 x-intercepts.
Tags
CCSS.HSA-REI.B.4B
7.
FLASHCARD QUESTION
Front
In the equation y = x² + 5x + 7, identify the coefficients a, b, and c.
Back
a = 1, b = 5, c = 7.
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