Question

Solve the system.

x+2y=0

2x-y=4

The solution is ___

Explain your choice of method.

Answer 1

x = 8/5 and y = -4/5

The method used was SUSTITUION METHOD

Explanation:

x = -2y

2(-2y)-y = 4

-4y-y = 4

-5y = 4

y = -4/5

then

x= -2(-4/5)

x = 8/5