Hi,

Note: the slope of the line will be 

(1-1) (3,9)

m = 9 -(-1)/ 3-1 = 10/2 = 5  

m = 5 OR 5/1

the standard slope-intercept form for an equation of a line y = mx + b  

where m is the slope and b the y-intercept.  

y = 5x + b  using ordered pair Pt(1,-1) to solve fo b

-1 = 5 + b

-6 = b

y = 5x -6  Pt(0,-6) and Pt(6/5,0) on the line

Note as y increases/decreases by 5, x increases/decreases by 1



 

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