Pls help due at 3:00

What term makes it inconsistent y=2x - 4 ?

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units