(0,-9)
Step-by-step explanation:
y=-2x+9
5x-2y=18
so then
-2x-y=9
how get rid of the y by multiplying the second equation by -2
5x=18
4x=-18
now add
9x=0
x=0
now for y you substitute the x in for one of the equations
-2x=18
x=-9
