<PRE><B>Question 544363</B>
Plug the values of the points in the equation Ax+by=-26

we get
4.00	a		-5	b	=	-26	.............1	
1	a		-11	b	=	-26	.............2	
Eliminate 	b							
multiply (1)by 		-11						
Multiply (2) by		5						
-44	a		55	b	=	286		
5	a	+	-55	b	=	-130		
Add the two equations								
-39	a				=	156.000		
/	-39							
a	=	-4						
plug value of 			a	in (1)				
4	a	+	-5	b	=	-26		
-16		+	-5	b	=	-26		
			-5	b	=	-26	+	16
			-5	b	=	-10		
				b	=	2		
</PRE>