Finding the Maximum or Minimum
The dashed line going through the maximum or minimum point is the quadratic's axis of symmetry. The axis of symmetry divides the quadratic into equal halves. The real number roots of a quadratic are either one or two points on the x-axis. The distance between the roots is divided in half by the axis of symmetry. The value of the min or max is . The value of the min or max is . The min or max is the point .