Question

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

-x - 2y = -4
3x + y = 12

-2y - 4

2y - 4

2y + 4

-2y + 4

Answer 1

-x-2y=-4

x=-2y+4

Answer 2

What? @chris00

Answer 3

you want to try and isolate x in the the first equation

Answer 4

so to do this we add x to both sides and and 4 to both sides