Question 454526
x1		y1	x2	y2				
0		-1	2	3				
								
slope m =		(y2-y1)/(x2-x1)						
(3-(-1))/(2-0) 
(4/2)  				
m=2						 
								
Plug value of  the slope  and point (0,-1) in	
Y =mx+b			
-1.00=0+b				
b=-1+0					
b=-1							
So the equation  will be								
Y =2x-1			
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