| A | B |
|---|
| axis of symmetry | A line that divides a plane figure or a graph into two congruent reflected halves. Given in the form of an equation |
| binomial | A polynomial with two terms |
| completing the square | A process used to form a perfect square trinomial. To complete the square of x^2+bx, add(b/2)^2 |
| complex number | Any number that can be written as a + bi, where a and b are real numbers and i=√-1 |
| discriminant | b^2-4ac. The part of the quadratic formula that is under the radical and determines the number and nature of the solutions. |
| imaginary number | The square root of a negative number, written in the form bi, where b is a real number and i is the imaginary unit √-1. |
| maximum value | The y-value of the highest point on the graph of a function |
| minimum value | The y-value of the lowest point on the graph of a function. |
| parabola | The shape of the grah of a quadratic function. Also, the set of points equidistant from a point F, called the focus and a line d, called the directrix |
| quadratic function | A function that can be twritten in thr form f(x)=ax^2+bx+c where a, b, and c are real numbers and a≠0. |
| quadratic regression | A statistical method used to fit a uadratic model to a given data set |
| roots | Any value of the variable that makes the equation true. The x-intercepts, the solutions. |
| standard form | ax^2+bx+c=0, where a, b, and c are real numbers and a≠0. |
| trinomial | A polynomial with three terms. |
| vertex | The coordinates of the highest or lowest point on a parabola. |
| vertex form | A quadratic function written in the form f(x)=a(x-h)^2+k, where a, h, and k are constants and (h,k) is the vertex. |
| zero | The x-values of a quadratic equation when y=0. The roots, the answers, the solutions, the x-intercepts. |
