Discriminants (AQA A-Level Mathematics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the formula for the discriminant of ?
What is the formula for the discriminant of ?
What does tell us about the roots of a quadratic equation?
What does tell us about the roots of a quadratic equation?
Two distinct real roots
What does indicate about the roots of a quadratic equation?
What does indicate about the roots of a quadratic equation?
One real root (repeated)
If , what type of roots does the quadratic equation have?
If , what type of roots does the quadratic equation have?
No real roots (complex)
For , what is the discriminant ?
For , what is the discriminant ?
For to have two distinct real roots, what must be true about ?
For to have two distinct real roots, what must be true about ?
or
For , when does the parabola open upwards?
For , when does the parabola open upwards?
When
What is the x-coordinate of the vertex for ?
What is the x-coordinate of the vertex for ?
What is the y-intercept of the quadratic function ?
What is the y-intercept of the quadratic function ?
How many x-intercepts does a parabola have if ?
How many x-intercepts does a parabola have if ?
No x-intercepts