A quadratic equation can represent the trajectory of an object thrown in the air. [br][br]A trajectory is the path of an object while it is in the air, ending when it hits the ground or intended target.[br][br]Point A gives the starting height of the object the millisecond it is released. The [math]y[/math] value of point A is the starting height.[br][br]Point B is the vertex of the quadratic. Point B gives the maximum height of the object in the air. The [math]y[/math] value of point B is the maximum height.[br][br]Point C is one of the roots of the quadratic. Point C gives the maximum horizontal distance of the object. The [math]x[/math] value of point C is the total distance the object was thrown. When point C is on the [math]x[/math]-axis, it is considered ground level.[br][br]Move sliders [math]a[/math], [math]b[/math] or [math]c[/math]. [br]Slider [math]a[/math] is the coefficient in the term [math]ax^2[/math].[br]Slider [math]b[/math] is the coefficient in the term [math]bx[/math].[br]Slider [math]c[/math] is the constant term (also the coefficient in the term [math]cx^0[/math]).