Determine whether the situation shows direct variation a canoe rental cost 20 dollars plus 5 dollars for each hour of the rental

With: label the vertices and all the elements needed. find x

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Ineed in figuring out this problem.