Question 535018
x1		y1	x2	y2				
-1	5	3	7				
								
slope m =		(y2-y1)/(x2-x1)						
(	7	-	5	)/(	3	-1	) 
(	2	/	4	)  				
m=		  1/ 2						 
								
Plug value of  the slope  and point (	-1	,	5	) in	
Y 	=	m	x 	+	b			
5.00	=	- 1/2	+	b				
b=	5	-	 1/2					
b=	9/ 2							
So the equation  will be								
Y 	=	 1/2	x 	+	9/2

y=	0.5	x  +	4.5										
													
													
Plot the points 													
x	0	2	3										
y=	4.5	5.5	6										
(x,y)	(0,4.5	),(2,5.5),(3,6	) 

{{{drawing(300,300,-10,10,-10,10,circle(0,4.5,0.3),circle(2,5.5,0.3),circle(3,6,0.3),graph(300,300,-10,10,-10,10,y=0.5x+4.5))}}}

			
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