Glossary
Factored form of a quadratic function:
A quadratic function written in the form y equals a times the quantity x minus m times the quantity x minus n or f of x equals a times the quantity x minus m times the quantity x minus n, where a does not equal zero.
Quadratic function:
A function f whose value f of x, or y, at x is given by a quadratic polynomial.
Quadratic polynomial:
A second degree polynomial in which the highest degree of the variable(s) in its term(s) is represented by the exponent “2.”
Standard form of a quadratic function:
A quadratic function written in the form y equals a times x squared plus b times x plus c or f of x equals a times x squared plus b times x plus c, where a does not equal zero.
Vertex:
The vertex of a parabola is the maximum point or the minimum point of the curve. The general form for a vertex is (h, k).
Vertex form of a quadratic function:
A quadratic function written in the form y equals a times the quantity x minus h squared plus k or f of x equals a times the quantity x minus h squared plus k, with vertex (h, k) and where a does not equal zero.
Zeros:
The x-intercepts of the graph of a quadratic function.
