Discussion Week 1

C31 - Find all solutions to the linear system:

        x + y = 5
       2x - y = 3

A <- matrix(data=c(1, 1, 2, -1), nrow = 2, ncol = 2, byrow = TRUE)
b <- matrix(data=c(5, 3), nrow = 2, ncol = 1, byrow = FALSE)
round(solve(A, b), 2)

##      [,1]
## [1,] 2.67
## [2,] 2.33