Now that you know a few special derivatives, practice putting them into context.

Problem

Consider the graph of space, y, equals, 2, x, minus, tangent, x, space for  x[1.25,1.25]~x\in [-1.25,1.25]\,. A graph is shown with two horizontal tangents.
What are the exact arguments space, x, space at which the graph has horizontal tangents?
Select all that apply.
Select all that apply.