Stupid Question: DGPU in switchable GPU laptop useable with VM Windows?

I'm trying to come up with uses for my Y40-70. So, I have a very basic question that needs its own post.

With a switchable graphics laptop like this where it has 2 separate GPU's (Intel HD4400 and R9 M275X) could I do a GPU passthrough to a VM with the M275X? I can't seem to ever get prime to work and now windows refuses to install to it so I'm left with linux and OSX.

You are trying to do GPU Passthrough from the Host to the VM?

@FaunCB You changed your Avatar, for a moment I didn't recognize you...

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Yeah like wendell's stuff

In order to use the M275X in linux I have to use prime but there isn't any indication that it works.