Question 568737
4	x	+	7	y	=	8.77	.............1	
8	x	+	14	y	=	15.8	.............2	
Eliminate y								
multiply (1)by 		-2						
Multiply (2) by		1						
-8	x		-14	y	=	-17.54		
8	x		14	y	=	15.8		
Add the two equations								
0	x				=	-1.74	

which is absurd

Hence there is no solution to the system.
The lines are parallel