Question

Determine the value of y for the system of equations.

x − 3y = 4
2x + y = 8

Answer 1

Multiply 1st equation by 2, what you get ?

Answer 2

x - 3y = 4
2x + y = 8

Times the first equation by -2
-2(x - 3y = 4); simplify
-2x + 6y = -8

Put the two new equations together
-2x + 6y = -8
2x + y = 8 (+)
_________
7y = 0; divide each term by 7
7y/7 = 0/7; solve
y = 0 <-----------Answer

Answer 3

Thats what I got

Answer 4

thanks(:

Answer 5

Your Welcome :)