Follow these steps to draw a parabola with the given equation: y = 2 2 − 4x + 1 In this case, a is 2, b is -4 and c is 1. The parabola's vertex is (h,k). This is about to get really confusing ...

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 If k < 0, the vertex is a maximum ...