Which of the variables is the dependent variable? hours of sleep, hours of study, homework score, test score

How to do this , and can some one explain

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland