You are quite right. There's nothing more to it than composing.
Hello.
This appears to be a straightforward question although, just starting an introduction analysis, it is presented in a different form than I'm familiar with, so I wanted to see if I can approach it in a straightforward way...
if R is a relation R={(x,y): (x^2) + 2y = 5} and J is a relation J:{(x,y): 2x-y = 3}
then the exercise is to find the compositions J of R and R of J.
It appears both the relations are functions (each element maps to a unique element), so is the problem just to solve each in terms of y then to compose the functions? Is this too simple?
Any help gladly appreciated! Thanks!