Cumulative Ch.4B & Ch. 5

Front

What is the definition of a parabola?

Back

Front

What is the vertex of a parabola?

Back

Front

What is the directrix of a parabola?

Back

The directrix is a fixed line used in the definition of a parabola. It is located opposite the vertex and is perpendicular to the axis of symmetry.

Front

How do you determine the equation of a parabola given the vertex and directrix?

Back

The equation can be derived using the distance formula, where the distance from any point on the parabola to the focus equals the distance to the directrix.

Front

What is the discriminant in a quadratic equation?

Back

Front

What does a positive discriminant indicate?

Back

A positive discriminant indicates that the quadratic equation has two distinct real roots.

Front

What does a zero discriminant indicate?

Back

A zero discriminant indicates that the quadratic equation has exactly one real root (a repeated root).

Front

What does a negative discriminant indicate?

Back

A negative discriminant indicates that the quadratic equation has two complex (imaginary) roots.

Front

Back

Front

What is the product of two complex numbers (3 - 2i) and (7 + 6i)?

Back