Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).

x - 2y = -1
2x - y = 4

Answer 1

x=-1+2y
2x-y=4
sub first equation into second
2(-1+2y)-y=4
-2+4y-y=4
3y=6
y=2

sub y=2, x=-1+2(2)
=-1+4
=3

(3,2)