Quadratic graph lines are U- or Õˆ-shaped, which is called a parabola. A linear graph can be drawn using only three points. A quadratic graph is a curve, so more points are plotted to support accuracy.
Coordinates are given in the form (\(x\), \(y\)). The first number is the position in the x-direction (horizontal) and the second is the position in the y-direction (vertical).