Question 455036
4x+4y=0	.............1				
y=72+8x	---------2				
substitute y in (1)											
4x+4(72+8x)=0
4x+288+32x=0			
4x+32x=0-288				
36x=-288								
/36										
x=-8										
Plug the value of x in (1)											
4x+4y=0					
4*-8+4y=0				
-32+4y=0						
4y=32								
/4										
y=8