What is the value of the y in the system below? 6x+3y=0 −3y+3y=9

Question

need help with this question pls need this today both seperate equations

Answer 1

divide everything by 3 to get

2x+y=0 and you probably meant to have -3x+3y = 9 so that's -x+y=3

y=-2x and y=3+x

-2x =3+x

x =-1, y=-2

(-1,2) is the solution, the point of intersection of 6x+3y=0 and -3x+3y=9

IF you really meant -3y+3y=9, that's the same as 0=9 which is impossible