Question

Y=2x+9
y=6−x
what is the solution??

Answer 1

Explanation:

y=2x+9

y=6−x

(y-2x=9)(-1)

y+x=6

-y+2x=-9

y+x=6

3x=-3

x=-3/3=-1

sub x=-1 in eq 1

y-2(-1)=9

y+2=9

y=9-2=5

so (-1;5) is the only solution for this system

(hope it's correct)