Question

Choose the graph which matches the following system of equations. 2x + y = –1 3x + 2y = –6

Answer 1

we can firstly rearrange x-y=1 to be
x=1 + y
so y=x-1
then we sub y=x-1 into the second equation of 3x-2y=8
3x-2(x-1)=8
3x-2x+2=8
x=8-2
x=6
now sub x=6 back into either equations, lets choose y=x-1
so y=6-1
y=5
so the point of intersection here is (6,5)

Answer 2

hope this worked