What is the first thing to look for when solving equation

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Jared had 3/7 of the minutes on a family phone plan remaining for the month. the plan is shared by 2 people. if divided equally what portion of the minutes remaining on the phone plan would be avalible for each person

If y varies as x, and y=8 as x=4 what will be the value of y if x=2