Question

Graphical Method
x+y=0; 2x-y=9​

Answer 1

Answer:

x=0-y 2x=9+y

x=9+y/2

u can solve it by taking y as your own number

Answer 2

Step-by-step explanation:

x=0,y=0 is the solution because it is the intersection point of the two lines.You can understand clearly by drawing the above graph in a graph sheet