Given the system of linear equations.

part a: use substitution to find the solution to the systems of equations. include all of your work in your final answer.

part b: algebraically verify your answer to part a. include all of your work in your final answer.
part c: graphically verify your answer to part a. in your final answer, include the graph.
{x - y = 5
{4x + y = 10
! 11 points