Is my laptop using it's graphics card?

I have a lenovo y40 with a radeon r9 m275 and an i7 procesor, and i can't run simple games even at EXTREMELY low resolutions, I fear that my computer is using the intel graphics and I want to know how to make my computer use the dedicated graphics card.

If your computer wasn't using its graphics card you would see a black screen. Just go into the settings and increase the resoloution (sorry for spelling)

Right click on your desktop see if there's an option like "Switcheable graphics"