Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
x - 2y = -4
2x - y = 1

Answer 1

solve this the same way as the last question you asked

Answer 2

eed help

Answer 3

did you understand the answer to your last question?

Answer 4

y=2x-1
therefore
x-4x+2 = -4
-3x = -6
therefore x=2
thus y=3
(2,3)

Answer 5

x+2y=7 / 2
2x+y=8

2x+4y=14
2x+y=8
---------
-- 3y=6
y=6/3 =2

x+2y=7
x+4=7
x=7-4=3
x=3

--- solutions are (3,2)