Understanding Quadratic Functions

The vertical line that divides a parabola into two mirror-image halves.

A number multiplying a variable.

A domain containing every real value within an interval.

The highest exponent of the variable in a polynomial.

A domain consisting of separate permitted values.

The expression b² − 4ac, which determines the number of real roots of a quadratic equation.

The set of all allowed input values of a function.

A point where a graph meets a coordinate axis.

A way to describe a continuous set of numbers using boundaries and brackets.

The highest point of a downward-opening parabola.