Question

What is the solution of the system? Use substitution. y = x + 6 y = 2x
A. (6, 12)
B. (–12, –6)
C. (–6, –12)
D. (2, 4)

Answer 1

Change around one equation to equal x & then plug it into the other one

Answer 2

you can get
y=x+6y (1) ->x+5y=0 (3)
y=2x (2)
let (3)into (2)

Answer 3

i think there are something wrong of the equations

Answer 4

i think it's B