Since y=x+3 (given)
Put value of y in equation x+y=(-3)
x+x+3=(-3)
2x=(-6)
x=(-3)
Put x=(-3) in x+y=(-3)
(-3)+y=(-3)
y=0
So, x=(-3)
y=0

just a plain vanilla substitution
Answer:
not sure i hope you find someone to help u tho soon
Step-by-step explanation:
Answer:
the second one it shows it going up
If you mean intersecting lines then...