Please Help
As the mass of a star increases, how do you think its luminosity might change?

Answer in explanation

Explanation:

If you're talking about *stars* in general, as mass increases, so does the luminosity - it burns brighter and faster.  A *star* will not increase it's mass generally, unless something falls into it;  and generally - even if a *planet* falls into a star (take our sun, for example - you could plunge the Earth into the sun, and you've only increased the sun's mass by 1/1,300,000th... )  

As radius increases, for example, when our sun slips into the Red Giant phase, it will become redder, but the surface will have increased 100,000 times - so, the amount of light it puts out now from a square meter, compared to how much it will put out when it's a red giant will be reduced 20 fold;  however, there's so much ***more*** area, that the overall brightness of our sun will increase dramatically.