maths
posted by kirthana .
solve 4x3y6=0; x+3y9=0 graphically

A graphical solution would be achieved by plotting both lines on an xy graph and seeing where they interesect.
We lack the tools to do graphing for you.
By adding the two equations you can eliminate the y variable and see immediatley that
5x  15 = 0
x = 3
Then use either of your equations for y.
12  3y = 6
3y = 6
y = 2