Question

solve graphically
x-y=-1
3x+2y=12​

Answer 1

substituting y= 3
x-y=-1
x-3=-1
x=-1+3
x=2
(2,3) is the solution
3x+2y=12
3x+2×3=12
3x+6=12
3x=12-6
3x=6
x=6/3
x=2
(2,3)is the solution

Answer 2

Answer:x-y=-1

3x+2y=12

2y=12-3x

Y = 12-3x÷2

Y = 6-3x

X-y=-1

X-6-3x=-1

X-3x=-1+6

2x=5

X= 5÷2

X=2.5

Step-by-step explanation: