11u=5v+35. 8v=6u+62 how do i eliminate these?

Two parallel lines are crossed by a transversal. what is value of x

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36