Question 930248
x1	y1	x2	y2									
7      	4    	-5    	9    									
												
The general equation of the line when co-ordinates of two points are given is												
												
{{{(y-	y1)/(	y1-y2) = (x-x1)/(x1-x2)}}}										
												
{{{(y-	4    	)/(	4    	-	9    	)=(x-	7      	)/(	7    	-	-5    	)}}}
												
												
{{{(y	-4      	)/(	-5      	)=(x	-7      	) /(	12      	)}}}				
												
{{{ 	12      	(y+	-4      	) =	-5      	(x-	7      	)}}}				
												
12      	y+	-48      	=	-5      	x+	35      						
												
12y+	5x	=83  

5x+12y=83