Question 485779
-3	x 	+	-7	y	=	21				
			-7	y	=	21	x+	3	x	
				y=		-3		-0.43	x	
when x = 0		x=	0	,(	0	,	-3	)		
When y=0		x=	-7	,(	-7	,	0	)		
When x=	-7	,	y=		0		(	-7	,	0
When x=	0	,	y=	0		(	0	,	0	) 
When x=	7	,	y=	0		(	7	,	0	) 
{{{drawing(300,300,-10,10,-10,10,circle(0,-3,0.3),circle(0	,	0	,	0.3	),circle(-7,0,0.3),	graph(300,300,-10,10,-10,10,y=-0.43x-3))}}}