The first two please. Thank you.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

Which point has an coordinates of (2,0) ? a