PLEASE SOLVE AND SHWO ME HOW TO WORK IT OUT PELASE

What is the difference between the equations of a vertical and a horizontal line?

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.

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction