Question

Determine the value of y for the system of equations.

x − 3y = 4

2x + y = 8

zero
−4
4
3

Answer 1

The first step is eliminating x.

Answer 2

so multiply the top equation by -2

Answer 3

add the resulting equations

Answer 4

-6y=4
and
y=8

Answer 5

first equation is 6y=-8 my bad

Answer 6

so since -8+8=0 then y=0

Answer 7

so its zero