the system of equation showing his graph in the xy-plane x + y = 1
2x - 3y = 17 determine the coordinates of the solutions of the system algebraically.
The solution of the system is (7, -6).
Wrong again!!!!
you point(7,-6) doesn't even satisfy the 2nd equation.
x + y = 1, ----> y = 1-x
2x - 3y = 17
use sub
2x - 3(1-x) = 17
5x = 20
x = 4 , then y = 1-4 = -3
solution: (4,-3)