Question 523215
Cell phone A4	x	numbers	,	Price =		$35.00		
Smart phoneZ20	y	numbers	,	Price =		$50.00		
				Total		51		
	x	+		y	=	51	.............1	
35	x	+	50	y	=	2220	.............2	
Eliminate y								
multiply (1)by 		-50						
Multiply (2) by		1						
-50	x		-50	y	=	-2550		
35	x		50	y	=	2220		
Add the two equations								
-15	x				=	-330		
/	-15							
x	=	22						
plug value of 			x	in (1)				
	x	+		y	=	51		
22		+		y	=	51		
				y	=	51		-22
				y	=	29		
				y	=	29		
Cell phone A4,	22	numbers						
Smart phoneZ20,	29	numbers	

equation1			51		=	51			
when x=	0,	y=	51	(	0	,	51	)	51    
when y =	0,	x=	51	(	51	,	0	)	51    
Equation 2									
when x=	0,	y=	44.4	(	0	,	44.4	)	44 2/5
when y =	0,	x=	63.43	(	63.43	,	0	)

{{{drawing(500,500,-70,70,-70,70,grid(1),circle(0,51,1),circle(51,0,1),circle(0,44.4,1),circle(63.43,0,1),circle(22,29,1),graph(500,500,-70,70,-70,70,y=-x+51,y=(-7/10)x+44.4))}}}	
					
m.ananth@hotmail.ca