Passed to TweenInfo.new to control the motion of a Tween. Each easing style is described in a graph below. The X axis is a value passed to TweenService:GetValue() and the Y axis is the value returned.
This diagram reflects the various styles with Enum.EasingDirection.In. Note that for Enum.EasingDirection.Out, the easing style is applied in a reverse direction.
For a video demonstration of each easing style, see UI Animations - Style.