If you’ve ever taken an algebra or physics class, then you’ve met a parabola, the simple curve that can model how a ball flies through the air. The most important part of a parabola is the vertex — ...

For a quadratic equation of the form \ (y = k { (x - a)^2} + b\), the following diagram shows the main properties: If k > 0, the vertex is a minimum turning point ...

The key features of a quadratic function are the y-intercept, the axis of symmetry, and the coordinates and nature of the turning point (or vertex). Part of Maths Algebraic skills ...