Question

solve the system by graphing. {-2x=2y-4, 2x-y=-5

Answer 1

x=(2y-4)/-2

x=-y+2

2(-y+2)-y=-5

-2y+4-y=-5

-3y+4=-5

-3y=-9

y=3

x=-y+2

x=-3+2

x=-1