quadratic formula | the formula ; it is used to solve a quadratic equation of the form |
roots of a quadratic equation | the x-intercepts of the parabola or the solution of the equation |
vertex form of a quadratic equation | when the quadratic equation is a quadratic function, the vertex form is , where x and y are variables and a, h, and k are numbers – the vertex of this parabola has the coordinates (h, k) |
x-intercept | the point where a line meets or crosses the x-axis |